Merge branch 'main' into dependabot/gradle/org.springdoc-springdoc-openapi-starter-webmvc-ui-2.5.0

📝 Sync README
> Made via sync_files.yml

Co-authored-by: GitHub Action action@github.com <GitHub Action action@github.com>

.github/FUNDING.yml

@@ -10,4 +10,4 @@ liberapay: # Replace with a single Liberapay username
 issuehunt: # Replace with a single IssueHunt username
 otechie: # Replace with a single Otechie username
 lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
-custom: ['https://paypal.me/froodleplex?country.x=GB&locale.x=en_GB'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
+custom: ['https://www.paypal.com/donate/?hosted_button_id=MN7JPG5G6G3JL'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE/1-bug.yml

@@ -0,0 +1,116 @@
+name: Bug Report
+description: File a bug report.
+title: "[Bug]: "
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Bug Report
+
+        Thanks for taking the time to fill out this bug report!
+
+        This issue form is for reporting bugs only. Please fill out the following sections to help us understand the issue you are facing.
+  
+  - type: textarea
+    id: problem
+    validations:
+      required: true
+    attributes:
+      label: The Problem
+      description: |
+        Describe the issue you are experiencing here. Tell us what you were trying to do and what happened.
+
+        Provide a clear and concise description of what the problem is.
+      placeholder: Provide a detailed description of the issue.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Environment
+
+  - type: input
+    id: version
+    validations:
+      required: true
+    attributes:
+      label: Version of Stirling-PDF
+      placeholder: e.g., 0.0.2
+      description: What version of Stirling-PDF has the issue?
+
+  - type: input
+    id: last-working-version
+    attributes:
+      label: Last Working Version of Stirling-PDF
+      placeholder: e.g., 0.0.1
+      description: |
+        If known, please provide the last version where the issue did not occur. Otherwise, leave blank.
+
+  - type: input
+    id: url
+    attributes:
+      label: Page Where the Problem Occurred
+      placeholder: e.g., http://localhost:8080/pdf/pipeline
+      description: |
+        If applicable, provide the URL where the issue occurred. Otherwise, leave blank.
+
+  - type: textarea
+    id: docker
+    attributes:
+      label: Docker Configuration
+      description: |
+        Enter your Docker configuration here if it is relevant to the error. Remove any personal data. Otherwise, leave the field blank.
+      render: txt
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Logs
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant Log Output
+      description: |
+        Provide any log output that might help us diagnose the issue, such as error messages or stack traces.
+      render: txt
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Additional Information
+
+  - type: textarea
+    id: additional-info
+    attributes:
+      label: Additional Information
+      description: |
+        If you have any additional information that might help us understand and resolve the issue, provide it here.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Browser Information
+
+  - type: dropdown
+    id: browsers
+    attributes:
+      label: Browsers Affected
+      description: |
+        If applicable, select the browsers where you are experiencing the issue. Otherwise, leave blank.
+      multiple: true
+      options:
+        - Firefox
+        - Chrome
+        - Safari
+        - Microsoft Edge
+        - Other
+
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: No Duplicate of the Issue
+      description: |
+        Please confirm that you have searched for similar issues and none of them match your problem.
+      options:
+        - label: I have verified that there are no existing issues raised related to my problem.
+          required: true

.github/ISSUE_TEMPLATE/2-feature.yml

@@ -0,0 +1,76 @@
+name: Feature Request
+description: Submit a new feature request.
+title: "[Feature Request]: "
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Feature Request
+
+        Thank you for taking the time to suggest a new feature!
+
+        This form is for proposing features or enhancements. Please fill out the following sections to help us understand your idea or suggestion.
+
+  - type: textarea
+    id: feature-description
+    validations:
+      required: true
+    attributes:
+      label: Feature Description
+      description: |
+        Describe the feature you would like to see. Tell us what the feature should do and the problem it would solve.
+
+        Provide a clear and concise description of what you want to happen.
+      placeholder: Provide a detailed description of the desired feature.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Motivation
+
+  - type: textarea
+    id: motivation
+    attributes:
+      label: Why is this feature valuable?
+      description: |
+        Explain why this feature is valuable to you or others. How would it improve the tool or process?
+
+        Describe any relevant scenarios that would benefit from this feature.
+      placeholder: Describe why this feature is important.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Possible Implementation
+
+  - type: textarea
+    id: implementation
+    attributes:
+      label: Suggested Implementation
+      description: |
+        If you have ideas about how this feature could be implemented, describe them here.
+
+        This section is optional but can be helpful to guide initial discussions.
+      placeholder: Describe how this feature might be implemented.
+
+  - type: markdown
+    attributes:
+      value: |
+        ## Additional Information
+
+  - type: textarea
+    id: additional-info
+    attributes:
+      label: Additional Information
+      description: |
+        If you have any additional information, comments, or resources you think would support or be relevant to your feature request, include them here.
+
+  - type: checkboxes
+    id: search-confirmation
+    attributes:
+      label: No Duplicate of the Feature
+      description: |
+        Please confirm that you have searched for similar features in our repository and found none that match your request.
+      options:
+        - label: I have verified that there are no existing features requests similar to my request.
+          required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: 💬 Discord Server
+    url: https://discord.gg/Cn8pWhQRxZ
+    about: You can join our Discord server for real time discussion and support

.github/workflows/build.yml

@@ -3,14 +3,8 @@ name: "Build repo"
 on:
   push:
     branches: ["main"]
-    paths-ignore:
-      - ".github/**"
-      - "**/*.md"
   pull_request:
     branches: ["main"]
-    paths-ignore:
-      - ".github/**"
-      - "**/*.md"
 
 jobs:
   build:
@@ -36,7 +30,7 @@ jobs:
 
       - uses: gradle/actions/setup-gradle@v3
         with:
-          gradle-version: 7.6
+          gradle-version: 8.7
 
       - name: Build with Gradle
         run: ./gradlew build --no-build-cache

.github/workflows/push-docker.yml

@@ -24,7 +24,7 @@ jobs:
 
       - uses: gradle/actions/setup-gradle@v3
         with:
-          gradle-version: 7.6
+          gradle-version: 8.7
 
       - name: Run Gradle Command
         run: ./gradlew clean build
@@ -110,3 +110,31 @@ jobs:
           labels: ${{ steps.meta2.outputs.labels }}
           build-args: VERSION_TAG=${{ steps.versionNumber.outputs.versionNumber }}
           platforms: linux/amd64,linux/arm64/v8
+
+
+      - name: Generate tags fat
+        id: meta3
+        uses: docker/metadata-action@v5
+        if: github.ref != 'refs/heads/main'
+        with:
+          images: |
+            ${{ secrets.DOCKER_HUB_USERNAME }}/s-pdf
+            ghcr.io/${{ steps.repoowner.outputs.lowercase }}/s-pdf
+          tags: |
+            type=raw,value=${{ steps.versionNumber.outputs.versionNumber }}-fat,enable=${{ github.ref == 'refs/heads/master' }}
+            type=raw,value=latest-fat,enable=${{ github.ref == 'refs/heads/master' }}
+
+      - name: Build and push main Dockerfile fat
+        uses: docker/build-push-action@v5
+        if: github.ref != 'refs/heads/main'
+        with:
+          builder: ${{ steps.buildx.outputs.name }}
+          context: .
+          file: ./Dockerfile-fat
+          push: true
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: ${{ steps.meta3.outputs.tags }}
+          labels: ${{ steps.meta3.outputs.labels }}
+          build-args: VERSION_TAG=${{ steps.versionNumber.outputs.versionNumber }}
+          platforms: linux/amd64,linux/arm64/v8

.github/workflows/releaseArtifacts.yml

@@ -29,7 +29,7 @@ jobs:
 
       - uses: gradle/actions/setup-gradle@v3
         with:
-          gradle-version: 7.6
+          gradle-version: 8.7
 
       - name: Generate jar (With Security=${{ matrix.enable_security }})
         run: ./gradlew clean createExe

.github/workflows/test.yml

@@ -32,6 +32,15 @@ jobs:
           sudo curl -SL "https://github.com/docker/compose/releases/download/v2.26.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
           # sudo chmod +x /usr/local/bin/docker-compose
 
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.7"
+          
+      - name: Pip requirements
+        run: |
+           pip install -r ./cucumber/requirements.txt
+              
       - name: Run Docker Compose Tests
         run: |
           chmod +x ./test.sh

.gitignore

@@ -124,4 +124,7 @@ watchedFolders/
 
 # Ignore Mac DS_Store files
 .DS_Store
-**/.DS_Store
+**/.DS_Store
+
+#cucumber
+/cucumber/reports/**

CONTRIBUTING.md

@@ -29,7 +29,7 @@ If you would like to add or modify a translation, please see [How to add new lan
 
 ## Docs
 
-Documentation for Stirling-PDF is handled in a seperate repository. Please see [Docs repository](https://github.com/Stirling-Tools/Stirling-Tools.github.io) or use "edit this page"-button at the bottom of each page at [https://stirlingtools.com/docs/](https://stirlingtools.com/docs/).
+Documentation for Stirling-PDF is handled in a separate repository. Please see [Docs repository](https://github.com/Stirling-Tools/Stirling-Tools.github.io) or use "edit this page"-button at the bottom of each page at [https://stirlingtools.com/docs/](https://stirlingtools.com/docs/).
 
 ## Fixing Bugs or Adding a New Feature
 

Dockerfile

@@ -1,44 +1,42 @@
 # Main stage
-FROM alpine:20240329
+FROM alpine:3.20.0
 
 # Copy necessary files
 COPY scripts /scripts
 COPY pipeline /pipeline
 COPY src/main/resources/static/fonts/*.ttf /usr/share/fonts/opentype/noto/
-COPY src/main/resources/static/fonts/*.otf /usr/share/fonts/opentype/noto/
+#COPY src/main/resources/static/fonts/*.otf /usr/share/fonts/opentype/noto/
 COPY build/libs/*.jar app.jar
 
 ARG VERSION_TAG
 
-
 # Set Environment Variables
 ENV DOCKER_ENABLE_SECURITY=false \
     VERSION_TAG=$VERSION_TAG \
     JAVA_TOOL_OPTIONS="$JAVA_TOOL_OPTIONS -XX:MaxRAMPercentage=75" \
-	HOME=/home/stirlingpdfuser \
-	PUID=1000 \
+    HOME=/home/stirlingpdfuser \
+    PUID=1000 \
     PGID=1000 \
     UMASK=022
 
-
 # JDK for app
 RUN echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /etc/apk/repositories && \
     echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/community" | tee -a /etc/apk/repositories && \
     echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/testing" | tee -a /etc/apk/repositories && \
-    apk update && \
+    apk upgrade --no-cache -a && \
     apk add --no-cache \
         ca-certificates \
         tzdata \
         tini \
-        openssl \
-openssl-dev \
         bash \
         curl \
-        openjdk17-jre \
-        su-exec \
         shadow \
+        su-exec \
+        openssl \
+        openssl-dev \
+        openjdk21-jre \
 # Doc conversion
-        libreoffice@testing \
+        libreoffice \
 # pdftohtml
         poppler-utils \
 # OCR MY PDF (unpaper for descew and other advanced featues)
@@ -60,10 +58,9 @@ openssl-dev \
     addgroup -S stirlingpdfgroup && adduser -S stirlingpdfuser -G stirlingpdfgroup && \
     chown -R stirlingpdfuser:stirlingpdfgroup $HOME /scripts /usr/share/fonts/opentype/noto /configs /customFiles /pipeline && \
     chown stirlingpdfuser:stirlingpdfgroup /app.jar && \
-    tesseract --list-langs && \
-    rm -rf /var/cache/apk/*
+    tesseract --list-langs
 
-EXPOSE 8080
+EXPOSE 8080/tcp
 
 # Set user and run command
 ENTRYPOINT ["tini", "--", "/scripts/init.sh"]

Dockerfile-fat

@@ -0,0 +1,84 @@
+# Build the application
+FROM gradle:7.6-jdk17 AS build
+
+# Set the working directory
+WORKDIR /app
+
+# Copy the entire project to the working directory
+COPY . .
+
+# Build the application with DOCKER_ENABLE_SECURITY=false
+RUN DOCKER_ENABLE_SECURITY=true \
+./gradlew clean build 
+
+# Main stage
+FROM alpine:3.20.0
+
+# Copy necessary files
+COPY scripts /scripts
+COPY pipeline /pipeline
+COPY src/main/resources/static/fonts/*.ttf /usr/share/fonts/opentype/noto/
+COPY --from=build /app/build/libs/*.jar app.jar
+
+ARG VERSION_TAG
+
+# Set Environment Variables
+ENV DOCKER_ENABLE_SECURITY=false \
+    VERSION_TAG=$VERSION_TAG \
+    JAVA_TOOL_OPTIONS="$JAVA_TOOL_OPTIONS -XX:MaxRAMPercentage=75" \
+    HOME=/home/stirlingpdfuser \
+    PUID=1000 \
+    PGID=1000 \
+    UMASK=022 \
+    FAT_DOCKER=true \
+    INSTALL_BOOK_AND_ADVANCED_HTML_OPS=true
+    
+
+# JDK for app
+RUN echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /etc/apk/repositories && \
+    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/community" | tee -a /etc/apk/repositories && \
+    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/testing" | tee -a /etc/apk/repositories && \
+    apk upgrade --no-cache -a && \
+    apk add --no-cache \
+        ca-certificates \
+        tzdata \
+        tini \
+        bash \
+        curl \
+        calibre@testing \
+        shadow \
+        su-exec \
+        openssl \
+        openssl-dev \
+        openjdk21-jre \
+# Doc conversion
+        libreoffice \
+# pdftohtml
+        poppler-utils \
+# OCR MY PDF (unpaper for descew and other advanced featues)
+        ocrmypdf \
+        tesseract-ocr-data-eng \
+        font-terminus font-dejavu font-noto font-noto-cjk font-awesome font-noto-extra \
+# CV
+        py3-opencv \
+# python3/pip
+        python3 && \
+    wget https://bootstrap.pypa.io/get-pip.py -qO - | python3 - --break-system-packages --no-cache-dir --upgrade && \
+# uno unoconv and HTML
+    pip install --break-system-packages --no-cache-dir --upgrade unoconv WeasyPrint && \
+    mv /usr/share/tessdata /usr/share/tessdata-original && \
+    mkdir -p $HOME /configs /logs /customFiles /pipeline/watchedFolders /pipeline/finishedFolders && \
+    fc-cache -f -v && \
+    chmod +x /scripts/* && \
+    chmod +x /scripts/init.sh && \
+# User permissions
+    addgroup -S stirlingpdfgroup && adduser -S stirlingpdfuser -G stirlingpdfgroup && \
+    chown -R stirlingpdfuser:stirlingpdfgroup $HOME /scripts /usr/share/fonts/opentype/noto /configs /customFiles /pipeline && \
+    chown stirlingpdfuser:stirlingpdfgroup /app.jar && \
+    tesseract --list-langs
+
+EXPOSE 8080/tcp
+
+# Set user and run command
+ENTRYPOINT ["tini", "--", "/scripts/init.sh"]
+CMD ["java", "-Dfile.encoding=UTF-8", "-jar", "/app.jar"]

Dockerfile-ultra-lite

@@ -1,5 +1,5 @@
 # use alpine
-FROM alpine:3.19.1
+FROM alpine:3.20.0
 
 ARG VERSION_TAG
 
@@ -8,7 +8,7 @@ ENV DOCKER_ENABLE_SECURITY=false \
     HOME=/home/stirlingpdfuser \
     VERSION_TAG=$VERSION_TAG \
     JAVA_TOOL_OPTIONS="$JAVA_TOOL_OPTIONS -XX:MaxRAMPercentage=75" \
-	PUID=1000 \
+    PUID=1000 \
     PGID=1000 \
     UMASK=022
 
@@ -18,24 +18,23 @@ COPY scripts/init-without-ocr.sh /scripts/init-without-ocr.sh
 COPY pipeline /pipeline
 COPY build/libs/*.jar app.jar
 
-
 # Set up necessary directories and permissions
-
-RUN mkdir /configs /logs /customFiles && \
-    chmod +x /scripts/*.sh && \
+RUN echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /etc/apk/repositories && \
+    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/community" | tee -a /etc/apk/repositories && \
+    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/testing" | tee -a /etc/apk/repositories && \
+    apk upgrade --no-cache -a && \
     apk add --no-cache \
         ca-certificates \
         tzdata \
         tini \
         bash \
         curl \
-        su-exec \
         shadow \
-        openjdk17-jre && \
-    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /etc/apk/repositories && \
-    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/community" | tee -a /etc/apk/repositories && \
-    echo "@testing https://dl-cdn.alpinelinux.org/alpine/edge/testing" | tee -a /etc/apk/repositories && \
+        su-exec \
+        openjdk21-jre && \
     # User permissions
+    mkdir /configs /logs /customFiles && \
+    chmod +x /scripts/*.sh && \
     addgroup -S stirlingpdfgroup && adduser -S stirlingpdfuser -G stirlingpdfgroup && \
     chown -R stirlingpdfuser:stirlingpdfgroup $HOME /scripts  /configs /customFiles /pipeline && \
     chown stirlingpdfuser:stirlingpdfgroup /app.jar    
@@ -43,9 +42,8 @@ RUN mkdir /configs /logs /customFiles && \
 # Set environment variables
 ENV ENDPOINTS_GROUPS_TO_REMOVE=CLI
 
-EXPOSE 8080
-
-ENTRYPOINT ["tini", "--", "/scripts/init-without-ocr.sh"]
+EXPOSE 8080/tcp
 
 # Run the application
+ENTRYPOINT ["tini", "--", "/scripts/init-without-ocr.sh"]
 CMD ["java", "-Dfile.encoding=UTF-8", "-jar", "/app.jar"]

Endpoint-groups.md

@@ -1,46 +1,47 @@
-| Operation           | PageOps | Convert | Security | Other | CLI  | Python | OpenCV | LibreOffice | OCRmyPDF | Java     | Javascript |
-|---------------------|---------|---------|----------|-------|------|--------|--------|-------------|----------|----------|------------|
-| adjust-contrast     |    ✔️    |         |          |       |      |        |        |             |          |           |    ✔️      |
-| auto-split-pdf      |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| crop                |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| extract-page        |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| merge-pdfs          |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| multi-page-layout   |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| pdf-organizer       |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |    ✔️       |
-| pdf-to-single-page  |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| remove-pages        |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| rotate-pdf          |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| scale-pages         |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| split-pdfs          |    ✔️    |         |          |       |      |        |        |             |          |    ✔️     |            |
-| file-to-pdf         |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| img-to-pdf          |         |    ✔️    |          |       |      |        |        |             |          |    ✔️     |            |
-| pdf-to-html         |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| pdf-to-img          |         |    ✔️    |          |       |      |        |        |             |          |    ✔️     |            |
-| pdf-to-pdfa         |         |    ✔️    |          |       |  ✔️   |        |        |             |    ✔️     |          |            |
-| pdf-to-markdown     |         |    ✔️    |          |       |      |        |        |             |            |    ✔️      |            |
-| pdf-to-presentation |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| pdf-to-text         |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| pdf-to-word         |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| pdf-to-xml          |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| xlsx-to-pdf         |         |    ✔️    |          |       |  ✔️   |        |        |     ✔️       |          |          |            |
-| add-password        |         |         |    ✔️     |       |      |        |        |             |          |    ✔️     |            |
-| add-watermark       |         |         |    ✔️     |       |      |        |        |             |          |    ✔️     |            |
-| cert-sign           |         |         |    ✔️     |       |      |        |        |             |          |    ✔️     |            |
-| change-permissions  |         |         |    ✔️     |       |      |        |        |             |          |    ✔️     |            |
-| remove-password     |         |         |    ✔️     |       |      |        |        |             |          |    ✔️     |            |
-| sanitize-pdf        |         |         |    ✔️     |       |      |        |        |             |          |    ✔️     |            |
-| add-image           |         |         |          |  ✔️    |      |        |        |             |          |    ✔️     |            |
-| add-page-numbers    |         |         |          |  ✔️    |      |        |        |             |          |    ✔️     |            |
-| auto-rename         |         |         |          |  ✔️    |      |        |        |             |          |    ✔️     |            |
-| change-metadata     |         |         |          |  ✔️    |      |        |        |             |          |    ✔️     |            |
-| compare             |         |         |          |  ✔️    |      |        |        |             |          |          |    ✔️       |
-| compress-pdf        |         |         |          |  ✔️    |  ✔️   |        |        |             |    ✔️     |          |            |
-| extract-image-scans |         |         |          |  ✔️    |  ✔️   |   ✔️    |   ✔️    |             |          |          |            |
-| extract-images      |         |         |          |  ✔️    |      |        |        |             |          |    ✔️     |            |
-| flatten             |         |         |          |  ✔️    |      |        |        |             |          |          |      ✔️      |
-| get-info-on-pdf     |         |         |          |  ✔️    |      |        |        |             |          |    ✔️      |            |
-| ocr-pdf             |         |         |          |  ✔️    |  ✔️   |        |        |             |    ✔️     |          |            |
-| remove-blanks       |         |         |          |  ✔️    |  ✔️   |   ✔️    |   ✔️    |             |          |          |            |
-| repair              |         |         |          |  ✔️    |  ✔️   |        |        |     ✔️       |          |          |            |
-| show-javascript     |         |         |          |  ✔️    |      |        |        |             |          |          |    ✔️       |
-| sign                |         |         |          |  ✔️    |      |        |        |             |          |          |    ✔️       |
+| Operation           | PageOps | Convert | Security | Other | CLI | Python | OpenCV | LibreOffice | OCRmyPDF | Java | Javascript |
+| ------------------- | ------- | ------- | -------- | ----- | --- | ------ | ------ | ----------- | -------- | ---- | ---------- |
+| adjust-contrast     | ✔️       |         |          |       |     |        |        |             |          |      | ✔️          |
+| auto-split-pdf      | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| crop                | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| extract-page        | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| merge-pdfs          | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| multi-page-layout   | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| pdf-organizer       | ✔️       |         |          |       |     |        |        |             |          | ✔️    | ✔️          |
+| pdf-to-single-page  | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| remove-pages        | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| rotate-pdf          | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| scale-pages         | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| split-pdfs          | ✔️       |         |          |       |     |        |        |             |          | ✔️    |            |
+| file-to-pdf         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| img-to-pdf          |         | ✔️       |          |       |     |        |        |             |          | ✔️    |            |
+| pdf-to-html         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| pdf-to-img          |         | ✔️       |          |       |     |        |        |             |          | ✔️    |            |
+| pdf-to-pdfa         |         | ✔️       |          |       | ✔️   |        |        |             | ✔️        |      |            |
+| pdf-to-markdown     |         | ✔️       |          |       |     |        |        |             |          | ✔️    |            |
+| pdf-to-presentation |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| pdf-to-text         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| pdf-to-word         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| pdf-to-xml          |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| xlsx-to-pdf         |         | ✔️       |          |       | ✔️   |        |        | ✔️           |          |      |            |
+| add-password        |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| add-watermark       |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| cert-sign           |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| remove-cert-sign    |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| change-permissions  |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| remove-password     |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| sanitize-pdf        |         |         | ✔️        |       |     |        |        |             |          | ✔️    |            |
+| add-image           |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |
+| add-page-numbers    |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |
+| auto-rename         |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |
+| change-metadata     |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |
+| compare             |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |
+| compress-pdf        |         |         |          | ✔️     | ✔️   |        |        |             | ✔️        |      |            |
+| extract-image-scans |         |         |          | ✔️     | ✔️   | ✔️      | ✔️      |             |          |      |            |
+| extract-images      |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |
+| flatten             |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |
+| get-info-on-pdf     |         |         |          | ✔️     |     |        |        |             |          | ✔️    |            |
+| ocr-pdf             |         |         |          | ✔️     | ✔️   |        |        |             | ✔️        |      |            |
+| remove-blanks       |         |         |          | ✔️     | ✔️   | ✔️      | ✔️      |             |          |      |            |
+| repair              |         |         |          | ✔️     | ✔️   |        |        | ✔️           |          |      |            |
+| show-javascript     |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |
+| sign                |         |         |          | ✔️     |     |        |        |             |          |      | ✔️          |

LocalRunGuide.md

@@ -14,7 +14,7 @@ You could theoretically use a Distrobox/Toolbox, if your Distribution has old or
 
 Install the following software, if not already installed:
 
-- Java 17 or later
+- Java 17 or later (21 recommended)
 
 - Gradle 7.0 or later (included within repo so not needed on server)
 
@@ -42,17 +42,25 @@ For Debian-based systems, you can use the following command:
 
 ```bash
 sudo apt-get update
-sudo apt-get install -y git  automake  autoconf  libtool  libleptonica-dev  pkg-config zlib1g-dev make g++ openjdk-17-jdk python3 python3-pip
+sudo apt-get install -y git  automake  autoconf  libtool  libleptonica-dev  pkg-config zlib1g-dev make g++ openjdk-21-jdk python3 python3-pip
 ```
 
 For Fedora-based systems use this command:
 
 ```bash
-sudo dnf install -y git automake autoconf libtool leptonica-devel pkg-config zlib-devel make gcc-c++ java-17-openjdk python3 python3-pip
+sudo dnf install -y git automake autoconf libtool leptonica-devel pkg-config zlib-devel make gcc-c++ java-21-openjdk python3 python3-pip
+```
+
+For non-root users with Nix Package Manager, use the following command:
+```bash
+nix-channel --update
+nix-env -iA nixpkgs.jdk21 nixpkgs.git nixpkgs.python38 nixpkgs.gnumake nixpkgs.libgcc nixpkgs.automake nixpkgs.autoconf nixpkgs.libtool nixpkgs.pkg-config nixpkgs.zlib nixpkgs.leptonica
 ```
 
 ### Step 2: Clone and Build jbig2enc (Only required for certain OCR functionality)
 
+For Debian and Fedora, you can build it from source using the following commands:
+
 ```bash
 mkdir ~/.git
 cd ~/.git &&\
@@ -64,6 +72,11 @@ make &&\
 sudo make install
 ```
 
+For Nix, you will face `Leptonica not detected`. Bypass this by installing it directly using the following command:
+```bash
+nix-env -iA nixpkgs.jbig2enc
+```
+
 ### Step 3: Install Additional Software
 Next we need to install LibreOffice for conversions, ocrmypdf for OCR, and opencv for pattern recognition functionality.
 
@@ -105,6 +118,13 @@ sudo dnf install -y libreoffice-writer libreoffice-calc libreoffice-impress unpa
 pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
 ```
 
+For Nix:
+
+```bash
+nix-env -iA nixpkgs.unpaper nixpkgs.libreoffice nixpkgs.ocrmypdf nixpkgs.poppler_utils
+pip3 install uno opencv-python-headless unoconv pngquant WeasyPrint
+```
+
 ### Step 4: Clone and Build Stirling-PDF
 
 ```bash
@@ -115,13 +135,12 @@ chmod +x ./gradlew &&\
 ./gradlew build
 ```
 
-
 ### Step 5: Move jar to desired location
 
 After the build process, a `.jar` file will be generated in the `build/libs` directory.
 You can move this file to a desired location, for example, `/opt/Stirling-PDF/`.
 You must also move the Script folder within the Stirling-PDF repo that you have downloaded to this directory.
-This folder is required for the python scripts using OpenCV
+This folder is required for the python scripts using OpenCV.
 
 ```bash
 sudo mkdir /opt/Stirling-PDF &&\
@@ -129,19 +148,25 @@ sudo mv ./build/libs/Stirling-PDF-*.jar /opt/Stirling-PDF/ &&\
 sudo mv scripts /opt/Stirling-PDF/ &&\
 echo "Scripts installed."
 ```
+
+For non-root users, you can just keep the jar in the main directory of Stirling-PDF using the following command:
+```bash
+mv ./build/libs/Stirling-PDF-*.jar ./Stirling-PDF-*.jar
+```
+
 ### Step 6: Other files
 #### OCR
 If you plan to use the OCR (Optical Character Recognition) functionality, you might need to install language packs for Tesseract if running non-english scanning.
 
 ##### Installing Language Packs
-Easiest is to use the langpacks provided by your repositories. Skip the other steps
+Easiest is to use the langpacks provided by your repositories. Skip the other steps.
 
 Manual:
 
 1. Download the desired language pack(s) by selecting the `.traineddata` file(s) for the language(s) you need.
 2. Place the `.traineddata` files in the Tesseract tessdata directory: `/usr/share/tessdata`
-3.
-Please view  [OCRmyPDF install guide](https://ocrmypdf.readthedocs.io/en/latest/installation.html) for more info.
+3. Please view  [OCRmyPDF install guide](https://ocrmypdf.readthedocs.io/en/latest/installation.html) for more info.
+
 **IMPORTANT:** DO NOT REMOVE EXISTING `eng.traineddata`, IT'S REQUIRED.
 
 Debian based systems, install languages with this command:
@@ -171,14 +196,38 @@ dnf search -C tesseract-langpack-
 rpm -qa | grep tesseract-langpack | sed 's/tesseract-langpack-//g'
 ```
 
+Nix:
+
+```bash
+nix-env -iA nixpkgs.tesseract
+```
+
+**Note:** Nix Package Manager pre-installs almost all the language packs when tesseract is installed.
+
 ### Step 7: Run Stirling-PDF
 
+Those who have pushed to the root directory, run the following commands:
+
 ```bash
 ./gradlew bootRun
 or
 java -jar /opt/Stirling-PDF/Stirling-PDF-*.jar
 ```
 
+Since libreoffice, soffice, and conversion tools have their dbus_tmp_dir set as `dbus_tmp_dir="/run/user/$(id -u)/libreoffice-dbus"`, you might get the following error when using their endpoints:
+```
+[Thread-7] INFO  s.s.SPDF.utils.ProcessExecutor - mkdir: cannot create directory ‘/run/user/1501’: Permission denied
+```
+To resolve this, before starting the Stirling-PDF, you have to set the environment variable to a directory you have write access to by using the following commands:
+
+```bash
+mkdir temp
+export DBUS_SESSION_BUS_ADDRESS="unix:path=./temp"
+./gradlew bootRun
+or
+java -jar ./Stirling-PDF-*.jar
+```
+
 ### Step 8: Adding a Desktop icon
 
 This will add a modified Appstarter to your Appmenu.
@@ -202,7 +251,19 @@ EOF
 
 Note: Currently the app will run in the background until manually closed.
 
-### Optional: Run Stirling-PDF as a service
+### Optional: Changing the host and port of the application:
+
+To override the default configuration, you can add the following to `/.git/Stirling-PDF/configs/custom_settings.yml` file:
+
+```bash
+server:
+  host: 0.0.0.0
+  port: 3000
+```
+
+**Note:** This file is created after the first application launch. To have it before that, you can create the directory and add the file yourself.
+
+### Optional: Run Stirling-PDF as a service (requires root).
 
 First create a .env file, where you can store environment variables:
 ```
@@ -239,6 +300,7 @@ WantedBy=multi-user.target
 ```
 
 Notify systemd that it has to rebuild its internal service database (you have to run this command every time you make a change in the service file):
+
 ```
 sudo systemctl daemon-reload
 ```

README.md

@@ -5,12 +5,12 @@
 [![Discord](https://img.shields.io/discord/1068636748814483718?label=Discord)](https://discord.gg/Cn8pWhQRxZ)
 [![Docker Image Version (tag latest semver)](https://img.shields.io/docker/v/frooodle/s-pdf/latest)](https://github.com/Stirling-Tools/Stirling-PDF/)
 [![GitHub Repo stars](https://img.shields.io/github/stars/stirling-tools/stirling-pdf?style=social)](https://github.com/Stirling-Tools/stirling-pdf)
-[![Paypal Donate](https://img.shields.io/badge/Paypal%20Donate-yellow?style=flat&logo=paypal)](https://www.paypal.com/paypalme/froodleplex)
+[![Paypal Donate](https://img.shields.io/badge/Paypal%20Donate-yellow?style=flat&logo=paypal)](https://www.paypal.com/donate/?hosted_button_id=MN7JPG5G6G3JL)
 [![Github Sponsor](https://img.shields.io/badge/Github%20Sponsor-yellow?style=flat&logo=github)](https://github.com/sponsors/Frooodle)
 
 [![Deploy to DO](https://www.deploytodo.com/do-btn-blue.svg)](https://cloud.digitalocean.com/apps/new?repo=https://github.com/Stirling-Tools/Stirling-PDF/tree/digitalOcean&refcode=c3210994b1af)
 
-This is a robust, locally hosted web-based PDF manipulation tool using Docker. It enables you to carry out various operations on PDF files, including splitting, merging, converting, reorganizing, adding images, rotating, compressing, and more. Originally developed entirely by ChatGPT, this locally hosted web application has evolved to encompass a comprehensive set of features, addressing all your PDF requirements.
+This is a robust, locally hosted web-based PDF manipulation tool using Docker. It enables you to carry out various operations on PDF files, including splitting, merging, converting, reorganizing, adding images, rotating, compressing, and more. This locally hosted web application has evolved to encompass a comprehensive set of features, addressing all your PDF requirements.
 
 Stirling PDF does not initiate any outbound calls for record-keeping or tracking purposes.
 
@@ -159,37 +159,41 @@ Please view https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToUseOCR
 
 ## Supported Languages
 
-Stirling PDF currently supports 27!
+Stirling PDF currently supports 32!
 
 | Language                                    | Progress                               |
 | ------------------------------------------- | -------------------------------------- |
 | English (English) (en_GB)                   | ![100%](https://geps.dev/progress/100) |
 | English (US) (en_US)                        | ![100%](https://geps.dev/progress/100) |
-| Arabic (العربية) (ar_AR)                    | ![42%](https://geps.dev/progress/42)   |
+| Arabic (العربية) (ar_AR)                    | ![40%](https://geps.dev/progress/40)   |
 | German (Deutsch) (de_DE)                    | ![99%](https://geps.dev/progress/99)   |
-| French (Français) (fr_FR)                   | ![91%](https://geps.dev/progress/91)   |
-| Spanish (Español) (es_ES)                   | ![99%](https://geps.dev/progress/99)   |
-| Simplified Chinese (简体中文) (zh_CN)       | ![98%](https://geps.dev/progress/98)   |
-| Traditional Chinese (繁體中文) (zh_TW)      | ![98%](https://geps.dev/progress/98)   |
-| Catalan (Català) (ca_CA)                    | ![51%](https://geps.dev/progress/51)   |
+| French (Français) (fr_FR)                   | ![94%](https://geps.dev/progress/94)   |
+| Spanish (Español) (es_ES)                   | ![94%](https://geps.dev/progress/94)   |
+| Simplified Chinese (简体中文) (zh_CN)       | ![95%](https://geps.dev/progress/95)   |
+| Traditional Chinese (繁體中文) (zh_TW)      | ![94%](https://geps.dev/progress/94)   |
+| Catalan (Català) (ca_CA)                    | ![49%](https://geps.dev/progress/49)   |
 | Italian (Italiano) (it_IT)                  | ![99%](https://geps.dev/progress/99)   |
-| Swedish (Svenska) (sv_SE)                   | ![42%](https://geps.dev/progress/42)   |
-| Polish (Polski) (pl_PL)                     | ![44%](https://geps.dev/progress/44)   |
-| Romanian (Română) (ro_RO)                   | ![41%](https://geps.dev/progress/41)   |
-| Korean (한국어) (ko_KR)                     | ![91%](https://geps.dev/progress/91)   |
-| Portuguese Brazilian (Português) (pt_BR)    | ![63%](https://geps.dev/progress/63)   |
-| Russian (Русский) (ru_RU)                   | ![91%](https://geps.dev/progress/91)   |
-| Basque (Euskara) (eu_ES)                    | ![66%](https://geps.dev/progress/66)   |
-| Japanese (日本語) (ja_JP)                   | ![91%](https://geps.dev/progress/91)   |
-| Dutch (Nederlands) (nl_NL)                  | ![88%](https://geps.dev/progress/88)   |
-| Greek (Ελληνικά) (el_GR)                    | ![88%](https://geps.dev/progress/88)   |
-| Turkish (Türkçe) (tr_TR)                    | ![99%](https://geps.dev/progress/99)   |
-| Indonesia (Bahasa Indonesia) (id_ID)        | ![82%](https://geps.dev/progress/82)   |
-| Hindi (हिंदी) (hi_IN)                          | ![82%](https://geps.dev/progress/82)   |
-| Hungarian (Magyar) (hu_HU)                  | ![81%](https://geps.dev/progress/81)   |
-| Bulgarian (Български) (bg_BG)               | ![75%](https://geps.dev/progress/75)   |
-| Sebian Latin alphabet (Srpski) (sr_LATN_RS) | ![84%](https://geps.dev/progress/84)   |
-| Ukrainian (Українська) (uk_UA)              | ![90%](https://geps.dev/progress/90)   |
+| Swedish (Svenska) (sv_SE)                   | ![40%](https://geps.dev/progress/40)   |
+| Polish (Polski) (pl_PL)                     | ![42%](https://geps.dev/progress/42)   |
+| Romanian (Română) (ro_RO)                   | ![39%](https://geps.dev/progress/39)   |
+| Korean (한국어) (ko_KR)                     | ![87%](https://geps.dev/progress/87)   |
+| Portuguese Brazilian (Português) (pt_BR)    | ![61%](https://geps.dev/progress/61)   |
+| Russian (Русский) (ru_RU)                   | ![86%](https://geps.dev/progress/86)   |
+| Basque (Euskara) (eu_ES)                    | ![63%](https://geps.dev/progress/63)   |
+| Japanese (日本語) (ja_JP)                   | ![87%](https://geps.dev/progress/87)   |
+| Dutch (Nederlands) (nl_NL)                  | ![84%](https://geps.dev/progress/84)   |
+| Greek (Ελληνικά) (el_GR)                    | ![85%](https://geps.dev/progress/85)   |
+| Turkish (Türkçe) (tr_TR)                    | ![97%](https://geps.dev/progress/97)   |
+| Indonesia (Bahasa Indonesia) (id_ID)        | ![78%](https://geps.dev/progress/78)   |
+| Hindi (हिंदी) (hi_IN)                          | ![79%](https://geps.dev/progress/79)   |
+| Hungarian (Magyar) (hu_HU)                  | ![77%](https://geps.dev/progress/77)   |
+| Bulgarian (Български) (bg_BG)               | ![97%](https://geps.dev/progress/97)   |
+| Sebian Latin alphabet (Srpski) (sr_LATN_RS) | ![80%](https://geps.dev/progress/80)   |
+| Ukrainian (Українська) (uk_UA)              | ![86%](https://geps.dev/progress/86)   |
+| Slovakian (Slovensky) (sk_SK)               | ![94%](https://geps.dev/progress/94)   |
+| Czech (Česky) (cs_CZ)                       | ![93%](https://geps.dev/progress/93)   |
+| Croatian (Hrvatski) (hr_HR)                 | ![98%](https://geps.dev/progress/98)   |
+| Norwegian (Norsk) (no_NB)                   | ![98%](https://geps.dev/progress/98)   |
 
 ## Contributing (creating issues, translations, fixing bugs, etc.)
 
@@ -211,39 +215,72 @@ For example in the settings.yml you have
 
 ```yaml
 system:
-  defaultLocale: 'en-US'
+  enableLogin: 'true'
 ```
 
-To have this via an environment variable you would have ``SYSTEM_DEFAULTLOCALE``
+To have this via an environment variable you would have ``SYSTEM_ENABLELOGIN``
 
 The Current list of settings is
 
 ```yaml
 security:
   enableLogin: false # set to 'true' to enable login
-  csrfDisabled: true
+  csrfDisabled: true # Set to 'true' to disable CSRF protection (not recommended for production)
+  loginAttemptCount: 5 # lock user account after 5 tries
+  loginResetTimeMinutes: 120 # lock account for 2 hours after x attempts
+#  initialLogin:
+#    username: "admin" # Initial username for the first login
+#    password: "stirling" # Initial password for the first login
+#  oauth2:
+#    enabled: false # set to 'true' to enable login (Note: enableLogin must also be 'true' for this to work)
+#    issuer: "" # set to any provider that supports OpenID Connect Discovery (/.well-known/openid-configuration) end-point
+#    clientId: "" # Client ID from your provider
+#    clientSecret: "" # Client Secret from your provider
+#    autoCreateUser: false # set to 'true' to allow auto-creation of non-existing users
+#    useAsUsername: "email" # Default is 'email'; custom fields can be used as the username
+#    scopes: "openid, profile, email" # Specify the scopes for which the application will request permissions
+#    provider: "google" # Set this to your OAuth provider's name, e.g., 'google' or 'keycloak'
+#    client:
+#      google:
+#        clientId: "" # Client ID for Google OAuth2
+#        clientSecret: "" # Client Secret for Google OAuth2
+#        scopes: "https://www.googleapis.com/auth/userinfo.email, https://www.googleapis.com/auth/userinfo.profile" # Scopes for Google OAuth2
+#        useAsUsername: "email" # Field to use as the username for Google OAuth2
+#      github:
+#        clientId: "" # Client ID for GitHub OAuth2
+#        clientSecret: "" # Client Secret for GitHub OAuth2
+#        scopes: "read:user" # Scope for GitHub OAuth2
+#        useAsUsername: "login" # Field to use as the username for GitHub OAuth2
+#      keycloak:
+#        issuer: "http://192.168.0.123:8888/realms/stirling-pdf" # URL of the Keycloak realm's OpenID Connect Discovery endpoint
+#        clientId: "stirling-pdf" # Client ID for Keycloak OAuth2
+#        clientSecret: "" # Client Secret for Keycloak OAuth2
+#        scopes: "openid, profile, email" # Scopes for Keycloak OAuth2
+#        useAsUsername: "email" # Field to use as the username for Keycloak OAuth2
 
 system:
   defaultLocale: 'en-US' # Set the default language (e.g. 'de-DE', 'fr-FR', etc)
   googlevisibility: false # 'true' to allow Google visibility (via robots.txt), 'false' to disallow
-  customStaticFilePath: '/customFiles/static/' # Directory path for custom static files
+  enableAlphaFunctionality: false # Set to enable functionality which might need more testing before it fully goes live (This feature might make no changes)
   showUpdate: true # see when a new update is available
   showUpdateOnlyAdmin: false # Only admins can see when a new update is available, depending on showUpdate it must be set to 'true'
   customHTMLFiles: false # enable to have files placed in /customFiles/templates override the existing template html files
 
-#ui:
-#  appName: exampleAppName # Application's visible name
-#  homeDescription: I am a description # Short description or tagline shown on homepage.
-#  appNameNavbar: navbarName # Name displayed on the navigation bar
+ui:
+  appName: null # Application's visible name
+  homeDescription: null # Short description or tagline shown on homepage.
+  appNameNavbar: null # Name displayed on the navigation bar
 
 endpoints:
   toRemove: [] # List endpoints to disable (e.g. ['img-to-pdf', 'remove-pages'])
   groupsToRemove: [] # List groups to disable (e.g. ['LibreOffice'])
 
 metrics:
-  enabled: true # 'true' to enable Info APIs endpoints (view http://localhost:8080/swagger-ui/index.html#/API to learn more), 'false' to disable
+  enabled: true # 'true' to enable Info APIs (`/api/*`) endpoints, 'false' to disable
 ```
 
+There is an additional config file ``/configs/custom_settings.yml`` were users familiar with java and spring application.properties can input their own settings on-top of Stirling-PDFs existing ones
+
 ### Extra notes
 
 - Endpoints. Currently, the endpoints ENDPOINTS_TO_REMOVE and GROUPS_TO_REMOVE can include comma separate lists of endpoints and groups to disable as example ENDPOINTS_TO_REMOVE=img-to-pdf,remove-pages would disable both image-to-pdf and remove pages, GROUPS_TO_REMOVE=LibreOffice Would disable all things that use LibreOffice. You can see a list of all endpoints and groups [here](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/Endpoint-groups.md)
@@ -269,7 +306,7 @@ For those wanting to use Stirling-PDFs backend API to link with their own custom
 ### Prerequisites:
 
 - User must have the folder ./configs volumed within docker so that it is retained during updates.
-- Docker uses must download the security jar version by setting ``DOCKER_ENABLE_SECURITY`` to ``true`` in environment variables.
+- Docker users must download the security jar version by setting ``DOCKER_ENABLE_SECURITY`` to ``true`` in environment variables.
 - Then either enable login via the settings.yml file or via setting ``SECURITY_ENABLE_LOGIN`` to ``true``
 - Now the initial user will be generated with username ``admin`` and password ``stirling``. On login you will be forced to change the password to a new one. You can also use the environment variables ``SECURITY_INITIALLOGIN_USERNAME`` and  ``SECURITY_INITIALLOGIN_PASSWORD`` to set your own straight away (Recommended to remove them after user creation).
 

Version-groups.md

@@ -1,52 +1,53 @@
-| Technology     | Ultra-Lite | Full |
-|----------------|:----------:|:----:|
-| Java           |     ✔️      |  ✔️  |
-| JavaScript     |     ✔️      |  ✔️  |
-| Libre          |            |  ✔️  |
-| Python         |            |  ✔️  |
-| OpenCV         |            |  ✔️  |
-| OCRmyPDF       |            |  ✔️  |
+| Technology | Ultra-Lite | Full  |
+| ---------- | :--------: | :---: |
+| Java       |     ✔️      |   ✔️   |
+| JavaScript |     ✔️      |   ✔️   |
+| Libre      |            |   ✔️   |
+| Python     |            |   ✔️   |
+| OpenCV     |            |   ✔️   |
+| OCRmyPDF   |            |   ✔️   |
 
-Operation                | Ultra-Lite | Full
--------------------------|------------|-----
-add-page-numbers         |     ✔️      |  ✔️
-add-password             |     ✔️      |  ✔️
-add-image                |     ✔️      |  ✔️
-add-watermark            |     ✔️      |  ✔️
-adjust-contrast          |     ✔️      |  ✔️
-auto-split-pdf           |     ✔️      |  ✔️
-auto-redact              |     ✔️      |  ✔️
-auto-rename              |     ✔️      |  ✔️
-cert-sign                |     ✔️      |  ✔️
-crop                     |     ✔️      |  ✔️
-change-metadata          |     ✔️      |  ✔️
-change-permissions       |     ✔️      |  ✔️
-compare                  |     ✔️      |  ✔️
-extract-page             |     ✔️      |  ✔️
-extract-images           |     ✔️      |  ✔️
-flatten                  |     ✔️      |  ✔️
-get-info-on-pdf          |     ✔️      |  ✔️
-img-to-pdf               |     ✔️      |  ✔️
-markdown-to-pdf          |     ✔️      |  ✔️
-merge-pdfs               |     ✔️      |  ✔️
-multi-page-layout        |     ✔️      |  ✔️
-overlay-pdf              |     ✔️      |  ✔️
-pdf-organizer            |     ✔️      |  ✔️
-pdf-to-csv               |     ✔️      |  ✔️
-pdf-to-img               |     ✔️      |  ✔️
-pdf-to-single-page       |     ✔️      |  ✔️
-remove-pages             |     ✔️      |  ✔️
-remove-password          |     ✔️      |  ✔️
-rotate-pdf               |     ✔️      |  ✔️
-sanitize-pdf             |     ✔️      |  ✔️
-scale-pages              |     ✔️      |  ✔️
-sign                     |     ✔️      |  ✔️
-show-javascript          |     ✔️      |  ✔️
-split-by-size-or-count   |     ✔️      |  ✔️
-split-pdf-by-sections    |     ✔️      |  ✔️
-split-pdfs               |     ✔️      |  ✔️
-compress-pdf             |            |  ✔️
-extract-image-scans      |            |  ✔️
-ocr-pdf                  |            |  ✔️
-pdf-to-pdfa              |            |  ✔️
-remove-blanks            |            |  ✔️
+| Operation              | Ultra-Lite | Full |
+| ---------------------- | ---------- | ---- |
+| add-page-numbers       | ✔️          | ✔️    |
+| add-password           | ✔️          | ✔️    |
+| add-image              | ✔️          | ✔️    |
+| add-watermark          | ✔️          | ✔️    |
+| adjust-contrast        | ✔️          | ✔️    |
+| auto-split-pdf         | ✔️          | ✔️    |
+| auto-redact            | ✔️          | ✔️    |
+| auto-rename            | ✔️          | ✔️    |
+| cert-sign              | ✔️          | ✔️    |
+| remove-cert-sign       | ✔️          | ✔️    |
+| crop                   | ✔️          | ✔️    |
+| change-metadata        | ✔️          | ✔️    |
+| change-permissions     | ✔️          | ✔️    |
+| compare                | ✔️          | ✔️    |
+| extract-page           | ✔️          | ✔️    |
+| extract-images         | ✔️          | ✔️    |
+| flatten                | ✔️          | ✔️    |
+| get-info-on-pdf        | ✔️          | ✔️    |
+| img-to-pdf             | ✔️          | ✔️    |
+| markdown-to-pdf        | ✔️          | ✔️    |
+| merge-pdfs             | ✔️          | ✔️    |
+| multi-page-layout      | ✔️          | ✔️    |
+| overlay-pdf            | ✔️          | ✔️    |
+| pdf-organizer          | ✔️          | ✔️    |
+| pdf-to-csv             | ✔️          | ✔️    |
+| pdf-to-img             | ✔️          | ✔️    |
+| pdf-to-single-page     | ✔️          | ✔️    |
+| remove-pages           | ✔️          | ✔️    |
+| remove-password        | ✔️          | ✔️    |
+| rotate-pdf             | ✔️          | ✔️    |
+| sanitize-pdf           | ✔️          | ✔️    |
+| scale-pages            | ✔️          | ✔️    |
+| sign                   | ✔️          | ✔️    |
+| show-javascript        | ✔️          | ✔️    |
+| split-by-size-or-count | ✔️          | ✔️    |
+| split-pdf-by-sections  | ✔️          | ✔️    |
+| split-pdfs             | ✔️          | ✔️    |
+| compress-pdf           |            | ✔️    |
+| extract-image-scans    |            | ✔️    |
+| ocr-pdf                |            | ✔️    |
+| pdf-to-pdfa            |            | ✔️    |
+| remove-blanks          |            | ✔️    |

build.gradle

@@ -12,14 +12,15 @@ plugins {
 import com.github.jk1.license.render.*
 
 group = 'stirling.software'
-version = '0.23.1'
+version = '0.25.3'
+
+//17 is lowest but we support and recommend 21
 sourceCompatibility = '17'
 
 repositories {
     mavenCentral()
 }
 
-
 licenseReport {
     renderers = [new JsonReportRenderer()]
 }
@@ -54,8 +55,8 @@ launch4j {
   headerType="console"
   jarTask = tasks.bootJar
 
-  errTitle="Encountered error, Do you have Java 17?"
-  downloadUrl="https://download.oracle.com/java/17/latest/jdk-17_windows-x64_bin.exe"
+  errTitle="Encountered error, Do you have Java 21?"
+  downloadUrl="https://download.oracle.com/java/21/latest/jdk-21_windows-x64_bin.exe"
   variables=["BROWSER_OPEN=true", "ENDPOINTS_GROUPS_TO_REMOVE=CLI"]
   jreMinVersion="17"
 
@@ -64,8 +65,8 @@ launch4j {
 
   messagesStartupError="An error occurred while starting Stirling-PDF"
   //messagesJreNotFoundError="This application requires a Java Runtime Environment, Please download Java 17."
-  messagesJreVersionError="You are running the wrong version of Java, Please download Java 17."
-  messagesLauncherError="Java is corrupted. Please uninstall and then install  Java 17."
+  messagesJreVersionError="You are running the wrong version of Java, Please download Java 21."
+  messagesLauncherError="Java is corrupted. Please uninstall and then install  Java 21."
   messagesInstanceAlreadyExists="Stirling-PDF is already running."
 }
 
@@ -92,7 +93,13 @@ dependencies {
     implementation("io.github.pixee:java-security-toolkit:1.1.3")
 
     implementation 'org.yaml:snakeyaml:2.2'
-    implementation 'org.springframework.boot:spring-boot-starter-web:3.2.4'
+    
+    // Exclude Tomcat and include Jetty
+    implementation('org.springframework.boot:spring-boot-starter-web:3.2.4') {
+        exclude group: 'org.springframework.boot', module: 'spring-boot-starter-tomcat'
+    }
+    implementation 'org.springframework.boot:spring-boot-starter-jetty:3.2.4'
+    
     implementation 'org.springframework.boot:spring-boot-starter-thymeleaf:3.2.4'
 
     if (System.getenv('DOCKER_ENABLE_SECURITY') != 'false') {
@@ -164,14 +171,14 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok:1.18.32'
 }
 
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
     dependsOn 'spotlessApply'
 }
 compileJava {
     options.compilerArgs << '-parameters'
 }
 
-task writeVersion {
+task writeVersion  {
     def propsFile = file('src/main/resources/version.properties')
     def props = new Properties()
     props.setProperty('version', version)
@@ -188,8 +195,6 @@ swaggerhubUpload {
     oas '3.0.0'  // The version of the OpenAPI Specification you're using
 }
 
-
-
 jar {
     enabled = false
     manifest {
@@ -203,6 +208,6 @@ tasks.named('test') {
     useJUnitPlatform()
 }
 
-task printVersion {
-  println project.version
+task printVersion  {
+    println project.version
 }

chart/stirling-pdf/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
-appVersion: 0.23.1
+appVersion: 0.25.3
 description: locally hosted web application that allows you to perform various operations
   on PDF files
 home: https://github.com/Stirling-Tools/Stirling-PDF

cucumber/exampleFiles/example.rtf

@@ -0,0 +1,158 @@
+{\rtf1\ansi\ansicpg1252\uc0\stshfdbch0\stshfloch0\stshfhich0\stshfbi0\deff0\adeff0{\fonttbl{\f0\froman\fcharset0\fprq2{\*\panose 02020603050405020304}Times New Roman;}{\f1\froman\fcharset2\fprq2{\*\panose 05050102010706020507}Symbol;}{\f2\fswiss\fcharset0\fprq2{\*\panose 020b0604020202020204}Arial;}}{\colortbl;\red0\green0\blue0;\red67\green67\blue67;
+\red102\green102\blue102;}{\stylesheet{\s0\snext0\sqformat\spriority0\fi0\sb0\sa0\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl276\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1 Normal;}{\s1\sbasedon0\snext0\styrsid15694742
+\sqformat\spriority0\keep\keepn\fi0\sb400\sa120\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs40\ltrch\b0\i0\fs40\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1 heading 1;}{\s2\sbasedon0\snext0\styrsid15694742
+\sqformat\spriority0\keep\keepn\fi0\sb360\sa120\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs32\ltrch\b0\i0\fs32\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1 heading 2;}{\s3\sbasedon0\snext0\styrsid15694742
+\sqformat\spriority0\keep\keepn\fi0\sb320\sa80\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs28\ltrch\b0\i0\fs28\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf2 heading 3;}{\s4\sbasedon0\snext0\styrsid15694742
+\sqformat\spriority0\keep\keepn\fi0\sb280\sa80\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs24\ltrch\b0\i0\fs24\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf3 heading 4;}{\s5\sbasedon0\snext0\styrsid15694742
+\sqformat\spriority0\keep\keepn\fi0\sb240\sa80\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf3 heading 5;}{\s6\sbasedon0\snext0\styrsid15694742
+\sqformat\spriority0\keep\keepn\fi0\sb240\sa80\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai\af2\afs22\ltrch\b0\i\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf3 heading 6;}{\*\cs10\additive\ssemihidden\spriority0 Default Paragraph Font;
+}{\*\ts11\tsrowd\snext11\ssemihidden\spriority0\aspalpha\aspnum\adjustright\ltrpar\li0\lin0\ri0\rin0\ql\faauto\tsvertalt\tsbrdrl\tsbrdrr\tsbrdrt\tsbrdrb\tsbrdrdgr\tsbrdrdgl\tsbrdrh\tsbrdrv\trpaddl108\trpaddfl3\trwWidthB0\trftsWidthB3\trpaddt0\trpaddft3\trpaddb0
+\trpaddfb3\trpaddr108\trpaddfr3 Normal Table;}{\s15\sbasedon0\snext15\styrsid15694742\sqformat\spriority0\keep\keepn\fi0\sb0\sa60\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs52\ltrch\b0\i0\fs52\loch\af2
+\dbch\af2\hich\f2\strike0\ulnone\cf1 Title;}{\s16\sbasedon0\snext16\styrsid15694742\sqformat\spriority0\keep\keepn\fi0\sb0\sa320\aspalpha\aspnum\adjustright\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl240\slmult1\rtlch\ab0\ai0\af2\afs30\ltrch\b0\i0\fs30
+\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf3 Subtitle;}}{\*\rsidtbl\rsid10976062\rsid13249109}{\*\generator Aspose.Words for Java 23.4.0;}{\info\version1\edmins0\nofpages1\nofwords0\nofchars0\nofcharsws0}\paperw12240\paperh15840\margl1440\margr1440\margt1440\margb1440\gutter0{
+\mmathPr\mbrkBin0\mbrkBinSub0\mdefJc1\mdispDef1\minterSp0\mintLim0\mintraSp0\mlMargin0\mmathFont0\mnaryLim1\mpostSp0\mpreSp0\mrMargin0\msmallFrac0\mwrapIndent1440\mwrapRight0}\deflang1033\deflangfe2052\adeflang1025\jexpand\showxmlerrors1\validatexml1{
+\*\wgrffmtfilter 013f}\viewkind1\viewscale100\fet0\ftnbj\aenddoc\ftnrstcont\aftnrstcont\ftnnar\aftnnrlc\widowctrl\nospaceforul\nolnhtadjtbl\alntblind\lyttblrtgr\dntblnsbdb\noxlattoyen\wrppunct\nobrkwrptbl\expshrtn\snaptogridincell\asianbrkrule\htmautsp\noultrlspc
+\useltbaln\splytwnine\ftnlytwnine\lytcalctblwd\allowfieldendsel\lnbrkrule\nouicompat\nofeaturethrottle1\utinl\formshade\nojkernpunct\dghspace180\dgvspace180\dghorigin1800\dgvorigin1440\dghshow1\dgvshow1\dgmargin\pgbrdrhead\pgbrdrfoot\rsidroot10976062\sectd\sectlinegrid360\pgwsxn12240\pghsxn15840\marglsxn1440\margrsxn1440\margtsxn1440\margbsxn1440\guttersxn0\headery720\footery720\colsx720\ltrsect\pard\plain\itap0\s0\ilvl0\fi0\sb0\sa0\aspalpha\aspnum\adjustright\brdrt\brdrl\brdrb\brdrr\brdrbtw\brdrbar
+\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl276\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1{\rtlch\ab0\ai0\af2\alang1025\afs22\ltrch\b0\i0\fs22\lang1033\langnp1033\langfe1033\langfenp1033\loch\af2\dbch\af2
+\hich\f2\strike0\ulnone\cf1 A}{\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\insrsid10976062\strike0\ulnone\cf1\par}\pard\plain\itap0\s0\ilvl0\fi0\sb0\sa0\aspalpha\aspnum\adjustright\brdrt\brdrl\brdrb\brdrr\brdrbtw\brdrbar\widctlpar
+\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl276\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1{\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\insrsid10976062\strike0\ulnone\cf1\par}\pard\plain\itap0\s0\ilvl0\fi0\sb0\sa0
+\aspalpha\aspnum\adjustright\brdrt\brdrl\brdrb\brdrr\brdrbtw\brdrbar\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl276\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1{\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2
+\dbch\af2\hich\f2\insrsid10976062\strike0\ulnone\cf1\par}\pard\plain\itap0\s0\ilvl0\fi0\sb0\sa0\aspalpha\aspnum\adjustright\brdrt\brdrl\brdrb\brdrr\brdrbtw\brdrbar\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl276\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22
+\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1{\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\insrsid10976062\strike0\ulnone\cf1\par}\pard\plain\itap0\s0\ilvl0\fi0\sb0\sa0\aspalpha\aspnum\adjustright\brdrt\brdrl\brdrb\brdrr\brdrbtw
+\brdrbar\widctlpar\ltrpar\li0\lin0\ri0\rin0\ql\faauto\sl276\slmult1\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\strike0\ulnone\cf1{\rtlch\ab0\ai0\af2\afs22\ltrch\b0\i0\fs22\loch\af2\dbch\af2\hich\f2\insrsid10976062\strike0\ulnone\cf1\par}
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+\lsdsemihidden1\lsdunhideused1\lsdqformat1\lsdpriority39 TOC Heading;}}}

cucumber/features/environment.py

@@ -0,0 +1,16 @@
+import os
+
+def before_all(context):
+    context.endpoint = None
+    context.request_data = None
+    context.files = {}
+    context.response = None
+
+def after_scenario(context, scenario):
+    if hasattr(context, 'files'):
+        for file in context.files.values():
+            file.close()
+    if os.path.exists('response_file'):
+        os.remove('response_file')
+    if hasattr(context, 'file_name') and os.path.exists(context.file_name):
+        os.remove(context.file_name)

cucumber/features/examples.feature

@@ -0,0 +1,130 @@
+@example
+Feature: API Validation
+
+  @positive @password
+  Scenario: Remove password 
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages
+    And the pdf is encrypted with password "password123"
+    And the request data includes
+      | parameter | value       |
+      | password  | password123 |
+    When I send the API request to the endpoint "/api/v1/security/remove-password"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+    And the response PDF is not passworded
+	And the response status code should be 200
+
+  @negative @password
+  Scenario: Remove password wrong password
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages
+    And the pdf is encrypted with password "password123"
+    And the request data includes
+      | parameter | value       |
+      | password  | wrongPassword |
+    When I send the API request to the endpoint "/api/v1/security/remove-password"
+    Then the response status code should be 500
+    And the response should contain error message "Internal Server Error"
+
+  @positive @info
+  Scenario: Get info
+    Given I generate a PDF file as "fileInput"
+    When I send the API request to the endpoint "/api/v1/security/get-info-on-pdf"
+    Then the response content type should be "application/json"
+    And the response file should have size greater than 100
+	And the response status code should be 200
+
+  @positive @password
+  Scenario: Add password
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages
+    And the request data includes
+      | parameter | value       |
+      | password  | password123 |
+    When I send the API request to the endpoint "/api/v1/security/add-password"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 100
+    And the response PDF is passworded
+	And the response status code should be 200
+	
+  @positive @password
+  Scenario: Add password with other params 
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages
+    And the request data includes
+      | parameter      | value       |
+      | ownerPassword  | ownerPass   |
+      | password       | password123 |
+      | keyLength      | 256         |
+      | canPrint       | true        |
+      | canModify      | false       |
+    When I send the API request to the endpoint "/api/v1/security/add-password"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 100
+    And the response PDF is passworded
+	And the response status code should be 200
+	
+  @positive @watermark
+  Scenario: Add watermark
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages
+    And the request data includes
+      | parameter     | value            |
+      | watermarkType | text             |
+      | watermarkText | Sample Watermark |
+      | fontSize      | 30               |
+      | rotation      | 45               |
+      | opacity       | 0.5              |
+      | widthSpacer   | 50               |
+      | heightSpacer  | 50               |
+    When I send the API request to the endpoint "/api/v1/security/add-watermark"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 100
+	And the response status code should be 200
+
+  @positive
+  Scenario: Remove blank pages
+    Given I generate a PDF file as "fileInput"
+	And the pdf contains 3 blank pages
+    And the request data includes
+      | parameter    | value       |
+      | threshold    | 90          |
+      | whitePercent | 99.9        |
+    When I send the API request to the endpoint "/api/v1/misc/remove-blanks"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+    And the response PDF should contain 0 pages
+	And the response status code should be 200
+
+  @positive @flatten
+  Scenario: Flatten PDF
+    Given I generate a PDF file as "fileInput"
+    And the request data includes
+      | parameter         | value   |
+      | flattenOnlyForms  | false    |
+    When I send the API request to the endpoint "/api/v1/misc/flatten"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+	And the response status code should be 200
+	
+  @positive @metadata
+  Scenario: Update metadata
+    Given I generate a PDF file as "fileInput"
+    And the request data includes
+      | parameter        | value             |
+      | author           | John Doe          |
+      | title            | Sample Title      |
+      | subject          | Sample Subject    |
+      | keywords         | sample, test      |
+      | producer         | Test Producer     |
+    When I send the API request to the endpoint "/api/v1/misc/update-metadata"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+    And the response PDF metadata should include "Author" as "John Doe"
+	And the response PDF metadata should include "Keywords" as "sample, test"
+	And the response PDF metadata should include "Subject" as "Sample Subject"
+	And the response PDF metadata should include "Title" as "Sample Title"
+	And the response status code should be 200
+
+  

cucumber/features/external.feature

@@ -0,0 +1,228 @@
+Feature: API Validation
+
+
+  @libre @positive
+  Scenario: Repair PDF
+    Given I generate a PDF file as "fileInput"
+    When I send the API request to the endpoint "/api/v1/misc/repair"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+	And the response status code should be 200
+	
+
+  @ocr @positive
+  Scenario: Process PDF with OCR
+    Given I generate a PDF file as "fileInput"
+    And the request data includes
+      | parameter        | value       |
+      | languages        | eng         |
+      | sidecar          | false        |
+      | deskew           | true        |
+      | clean            | true        |
+      | cleanFinal       | true        |
+      | ocrType          | Normal      |
+      | ocrRenderType    | hocr        |
+      | removeImagesAfter| false       |
+    When I send the API request to the endpoint "/api/v1/misc/ocr-pdf"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+	And the response status code should be 200
+
+
+  @ocr @positive
+  Scenario: Extract Image Scans
+    Given I generate a PDF file as "fileInput"
+	And the pdf contains 3 images on 2 pages
+    And the request data includes
+      | parameter        | value       |
+      | angleThreshold        | 5         |
+      | tolerance          | 20        |
+      | minArea           | 8000        |
+      | minContourArea            | 500        |
+      | borderSize       | 1        |
+    When I send the API request to the endpoint "/api/v1/misc/extract-image-scans"
+    Then the response content type should be "application/octet-stream"
+	And the response file should have extension ".zip"
+	And the response ZIP should contain 2 files
+    And the response file should have size greater than 0
+	And the response status code should be 200
+	
+	
+	
+  @ocr @negative
+  Scenario: Process PDF with text and OCR with type normal 
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages with random text
+    And the request data includes
+      | parameter        | value       |
+      | languages        | eng         |
+      | sidecar          | false        |
+      | deskew           | true        |
+      | clean            | true        |
+      | cleanFinal       | true        |
+      | ocrType          | Normal      |
+      | ocrRenderType    | hocr        |
+      | removeImagesAfter| false       |
+    When I send the API request to the endpoint "/api/v1/misc/ocr-pdf"
+	Then the response status code should be 500
+	
+  @ocr @positive
+  Scenario: Process PDF with OCR
+    Given I generate a PDF file as "fileInput"
+    And the request data includes
+      | parameter        | value       |
+      | languages        | eng         |
+      | sidecar          | false        |
+      | deskew           | true        |
+      | clean            | true        |
+      | cleanFinal       | true        |
+      | ocrType          | Force      |
+      | ocrRenderType    | hocr        |
+      | removeImagesAfter| false       |
+    When I send the API request to the endpoint "/api/v1/misc/ocr-pdf"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 0
+	And the response status code should be 200
+	
+  @ocr @positive
+  Scenario: Process PDF with OCR with sidecar
+    Given I generate a PDF file as "fileInput"
+    And the request data includes
+      | parameter        | value       |
+      | languages        | eng         |
+      | sidecar          | true        |
+      | deskew           | true        |
+      | clean            | true        |
+      | cleanFinal       | true        |
+      | ocrType          | Force      |
+      | ocrRenderType    | hocr        |
+      | removeImagesAfter| false       |
+    When I send the API request to the endpoint "/api/v1/misc/ocr-pdf"
+    Then the response content type should be "application/octet-stream"
+	And the response file should have extension ".zip"
+	And the response ZIP should contain 2 files
+    And the response file should have size greater than 0
+	And the response status code should be 200
+
+
+  @libre @positive
+  Scenario Outline: Convert PDF to various word formats
+  Given I generate a PDF file as "fileInput"
+  And the pdf contains 3 pages with random text
+  And the request data includes
+    | parameter    | value       |
+    | outputFormat | <format>    |
+  When I send the API request to the endpoint "/api/v1/convert/pdf/word"
+  Then the response status code should be 200
+  And the response file should have size greater than 100
+  And the response file should have extension "<extension>"
+
+  Examples:
+    | format | extension |
+    | docx   | .docx     |
+    | odt    | .odt      |
+    | doc    | .doc      |
+
+  @ocr
+  Scenario: PDFA
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages with random text
+	And the request data includes
+      | parameter        | value     |
+      | outputFormat     | pdfa       |
+    When I send the API request to the endpoint "/api/v1/convert/pdf/pdfa"
+	Then the response status code should be 200
+    And the response file should have extension ".pdf"
+    And the response file should have size greater than 100
+	
+  @ocr
+  Scenario: PDFA1
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages with random text
+	And the request data includes
+      | parameter        | value     |
+      | outputFormat     | pdfa-1       |
+    When I send the API request to the endpoint "/api/v1/convert/pdf/pdfa"
+	Then the response status code should be 200
+    And the response file should have extension ".pdf"
+    And the response file should have size greater than 100
+	
+  @compress @ghostscript @positive
+  Scenario: Compress
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages with random text
+	And the request data includes
+      | parameter        | value     |
+      | optimizeLevel     | 4       |
+    When I send the API request to the endpoint "/api/v1/misc/compress-pdf"
+	Then the response status code should be 200
+    And the response file should have extension ".pdf"
+    And the response file should have size greater than 100
+	
+  @compress @ghostscript @positive
+  Scenario: Compress
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages with random text
+	And the request data includes
+      | parameter        | value     |
+      | optimizeLevel     | 1       |
+	  | expectedOutputSize | 5KB |
+    When I send the API request to the endpoint "/api/v1/misc/compress-pdf"
+	Then the response status code should be 200
+    And the response file should have extension ".pdf"
+    And the response file should have size greater than 100
+	
+	
+  @compress @ghostscript @positive
+  Scenario: Compress
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 3 pages with random text
+	And the request data includes
+      | parameter        | value     |
+      | optimizeLevel     | 1       |
+	  | expectedOutputSize | 5KB |
+    When I send the API request to the endpoint "/api/v1/misc/compress-pdf"
+	Then the response status code should be 200
+    And the response file should have extension ".pdf"
+    And the response file should have size greater than 100	
+	
+  @libre @positive
+  Scenario Outline: Convert PDF to various types
+  Given I generate a PDF file as "fileInput"
+  And the pdf contains 3 pages with random text
+  And the request data includes
+    | parameter    | value       |
+    | outputFormat | <format>    |
+  When I send the API request to the endpoint "/api/v1/convert/pdf/<type>"
+  Then the response status code should be 200
+  And the response file should have size greater than 100
+  And the response file should have extension "<extension>"
+
+  Examples:
+   | type | format | extension |
+   |  text   | rtf   | .rtf     |
+   |  text   | txt    | .txt      |
+   |  presentation   | ppt   | .ppt     |
+   |  presentation   | pptx    | .pptx      |
+   |  presentation   | odp   | .odp     |
+   |  html   | html    | .zip      |
+
+	
+  @libre @positive @topdf
+  Scenario Outline: Convert PDF to various types
+  Given I use an example file at "exampleFiles/example<extension>" as parameter "fileInput"
+  When I send the API request to the endpoint "/api/v1/convert/file/pdf"
+  Then the response status code should be 200
+  And the response file should have size greater than 100
+  And the response file should have extension ".pdf"
+
+  Examples:
+   | extension | 
+   |   .docx  |
+   |  .odp   |
+   |  .odt   | 
+   |  .pptx   | 
+   |  .rtf   | 
+
+
+		

cucumber/features/general.feature

@@ -0,0 +1,96 @@
+@general
+Feature: API Validation
+
+	
+  @split-pdf-by-sections @positive
+  Scenario Outline: split-pdf-by-sections with different parameters
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 2 pages
+    And the request data includes
+      | parameter           | value       |
+      | horizontalDivisions | <horizontalDivisions> |
+      | verticalDivisions   | <verticalDivisions> |
+      | merge               | true |
+    When I send the API request to the endpoint "/api/v1/general/split-pdf-by-sections"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 200
+    And the response status code should be 200
+    And the response PDF should contain <page_count> pages
+
+  Examples:
+    | horizontalDivisions | verticalDivisions | page_count |
+    | 0                   | 1                 | 4          |
+    | 1                   | 1                 | 8          |
+    | 1                   | 2                 | 12          |
+    | 2                   | 2                 | 18          |
+
+  @split-pdf-by-sections @positive
+  Scenario Outline: split-pdf-by-sections with different parameters
+    Given I generate a PDF file as "fileInput"
+    And the pdf contains 2 pages
+    And the request data includes
+      | parameter           | value       |
+      | horizontalDivisions | <horizontalDivisions> |
+      | verticalDivisions   | <verticalDivisions> |
+      | merge               | true |
+    When I send the API request to the endpoint "/api/v1/general/split-pdf-by-sections"
+    Then the response content type should be "application/pdf"
+    And the response file should have size greater than 200
+    And the response status code should be 200
+    And the response PDF should contain <page_count> pages
+
+  Examples:
+    | horizontalDivisions | verticalDivisions | page_count |
+    | 0                   | 1                 | 4          |
+    | 1                   | 1                 | 8          |
+    | 1                   | 2                 | 12          |
+    | 2                   | 2                 | 18          |
+
+
+
+  @split-pdf-by-pages @positive
+  Scenario Outline: split-pdf-by-pages with different parameters
+  Given I generate a PDF file as "fileInput"
+  And the pdf contains 20 pages
+  And the request data includes
+    | parameter     | value         |
+    | fileInput     | fileInput     |
+    | pageNumbers   | <pageNumbers> |
+  When I send the API request to the endpoint "/api/v1/general/split-pages"
+  Then the response content type should be "application/octet-stream"
+  And the response status code should be 200
+  And the response file should have size greater than 200
+  And the response ZIP should contain <file_count> files
+
+  Examples:
+    | pageNumbers | file_count |
+    | 1,3,5-9     | 8          |
+    | all         | 20         |
+    | 2n+1        | 11         |
+    | 3n          | 7          |
+
+
+
+  @split-pdf-by-size-or-count @positive
+  Scenario Outline: split-pdf-by-size-or-count with different parameters
+  Given I generate a PDF file as "fileInput"
+  And the pdf contains 20 pages
+  And the request data includes
+    | parameter  | value          |
+    | fileInput  | fileInput      |
+    | splitType  | <splitType>    |
+    | splitValue | <splitValue>   |
+  When I send the API request to the endpoint "/api/v1/general/split-by-size-or-count"
+  Then the response content type should be "application/octet-stream"
+  And the response status code should be 200
+  And the response file should have size greater than 200
+  And the response ZIP file should contain <doc_count> documents each having <pages_per_doc> pages
+
+  Examples:
+    | splitType | splitValue | doc_count | pages_per_doc |
+    | 1         | 5          | 4         | 5             |
+    | 2         | 2          | 2         | 10            |
+    | 2         | 4          | 4         | 5             |
+    | 1         | 10         | 2         | 10            |
+
+

cucumber/features/steps/step_definitions.py

@@ -0,0 +1,307 @@
+import os
+import requests
+from behave import given, when, then
+from PyPDF2 import PdfWriter, PdfReader
+import io
+import random
+import string
+from reportlab.lib.pagesizes import letter
+from reportlab.pdfgen import canvas
+import mimetypes
+import requests
+import zipfile
+import shutil
+
+#########
+# GIVEN #
+#########
+
+@given('I generate a PDF file as "{fileInput}"')
+def step_generate_pdf(context, fileInput):
+    context.param_name = fileInput
+    context.file_name = "genericNonCustomisableName.pdf"
+    writer = PdfWriter()
+    writer.add_blank_page(width=72, height=72)  # Single blank page
+    with open(context.file_name, 'wb') as f:
+        writer.write(f)
+    if not hasattr(context, 'files'):
+        context.files = {}
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+
+@given('I use an example file at "{filePath}" as parameter "{fileInput}"')
+def step_use_example_file(context, filePath, fileInput):
+    context.param_name = fileInput
+    context.file_name = filePath.split('/')[-1]
+    if not hasattr(context, 'files'):
+        context.files = {}
+    
+    # Ensure the file exists before opening
+    try:
+        example_file = open(filePath, 'rb')
+        context.files[context.param_name] = example_file
+    except FileNotFoundError:
+        raise FileNotFoundError(f"The example file '{filePath}' does not exist.")
+
+        
+
+@given('the pdf contains {page_count:d} pages')
+def step_pdf_contains_pages(context, page_count):
+    writer = PdfWriter()
+    for i in range(page_count):
+        writer.add_blank_page(width=72, height=72)
+    with open(context.file_name, 'wb') as f:
+        writer.write(f)
+    context.files[context.param_name].close()
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+# Duplicate for now...
+@given('the pdf contains {page_count:d} blank pages')
+def step_pdf_contains_blank_pages(context, page_count):
+    writer = PdfWriter()
+    for i in range(page_count):
+        writer.add_blank_page(width=72, height=72)
+    with open(context.file_name, 'wb') as f:
+        writer.write(f)
+    context.files[context.param_name].close()
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+
+
+def create_black_box_image(file_name, size):
+    can = canvas.Canvas(file_name, pagesize=size)
+    width, height = size
+    can.setFillColorRGB(0, 0, 0)
+    can.rect(0, 0, width, height, fill=1)
+    can.showPage()
+    can.save()
+
+def create_pdf_with_black_boxes(file_name, image_count, page_count):
+    page_width, page_height = letter
+    box_size = 72  # 1 inch by 1 inch black box
+    boxes_per_page = image_count // page_count + (1 if image_count % page_count != 0 else 0)
+    
+    writer = PdfWriter()
+    box_counter = 0
+    
+    for page in range(page_count):
+        packet = io.BytesIO()
+        can = canvas.Canvas(packet, pagesize=letter)
+        
+        for i in range(boxes_per_page):
+            if box_counter >= image_count:
+                break
+            x = (i % (page_width // box_size)) * box_size
+            y = page_height - ((i // (page_width // box_size) + 1) * box_size)
+            can.setFillColorRGB(0, 0, 0)
+            can.rect(x, y, box_size, box_size, fill=1)
+            box_counter += 1
+            
+        can.showPage()
+        can.save()
+        packet.seek(0)
+        new_pdf = PdfReader(packet)
+        writer.add_page(new_pdf.pages[0])
+    
+    with open(file_name, 'wb') as f:
+        writer.write(f)
+
+@given('the pdf contains {image_count:d} images on {page_count:d} pages')
+def step_pdf_contains_images(context, image_count, page_count):
+    if not hasattr(context, 'param_name'):
+        context.param_name = "default"
+    context.file_name = "genericNonCustomisableName.pdf"
+    create_pdf_with_black_boxes(context.file_name, image_count, page_count)
+    if not hasattr(context, 'files'):
+        context.files = {}
+    if context.param_name in context.files:
+        context.files[context.param_name].close()
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+    
+@given('the pdf contains {page_count:d} pages with random text')
+def step_pdf_contains_pages_with_random_text(context, page_count):
+    buffer = io.BytesIO()
+    c = canvas.Canvas(buffer, pagesize=letter)
+    width, height = letter
+    
+    for _ in range(page_count):
+        text = ''.join(random.choices(string.ascii_letters + string.digits, k=100))
+        c.drawString(100, height - 100, text)
+        c.showPage()
+        
+    c.save()
+    
+    with open(context.file_name, 'wb') as f:
+        f.write(buffer.getvalue())
+        
+    context.files[context.param_name].close()
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+@given('the pdf pages all contain the text "{text}"')
+def step_pdf_pages_contain_text(context, text):
+    buffer = io.BytesIO()
+    c = canvas.Canvas(buffer, pagesize=letter)
+    width, height = letter
+    
+    for _ in range(len(PdfReader(context.file_name).pages)):
+        c.drawString(100, height - 100, text)
+        c.showPage()
+        
+    c.save()
+    
+    with open(context.file_name, 'wb') as f:
+        f.write(buffer.getvalue())
+        
+    context.files[context.param_name].close()
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+@given('the pdf is encrypted with password "{password}"')
+def step_encrypt_pdf(context, password):
+    writer = PdfWriter()
+    reader = PdfReader(context.file_name)
+    for i in range(len(reader.pages)):
+        writer.add_page(reader.pages[i])
+    writer.encrypt(password)
+    with open(context.file_name, 'wb') as f:
+        writer.write(f)
+    context.files[context.param_name].close()
+    context.files[context.param_name] = open(context.file_name, 'rb')
+
+@given('the request data is')
+def step_request_data(context):
+    context.request_data = eval(context.text)
+
+@given('the request data includes')
+def step_request_data_table(context):
+    context.request_data = {row['parameter']: row['value'] for row in context.table}
+
+@given('save the generated PDF file as "{filename}" for debugging')
+def save_generated_pdf(context, filename):
+    with open(filename, 'wb') as f:
+        f.write(context.files[context.param_name].read())
+    print(f"Saved generated PDF content to {filename}")
+
+########
+# WHEN #
+########
+
+@when('I send the API request to the endpoint "{endpoint}"')
+def step_send_api_request(context, endpoint):
+    url = f"http://localhost:8080{endpoint}"
+    files = context.files if hasattr(context, 'files') else {}
+
+    if not hasattr(context, 'request_data') or context.request_data is None:
+        context.request_data = {}
+
+    form_data = []
+    for key, value in context.request_data.items():
+        form_data.append((key, (None, value)))
+
+    for key, file in files.items():
+        mime_type, _ = mimetypes.guess_type(file.name)
+        mime_type = mime_type or 'application/octet-stream'
+        print(f"form_data {file.name} with {mime_type}")
+        form_data.append((key, (file.name, file, mime_type)))
+
+    response = requests.post(url, files=form_data)
+    context.response = response
+
+########
+# THEN #
+########
+
+@then('the response content type should be "{content_type}"')
+def step_check_response_content_type(context, content_type):
+    actual_content_type = context.response.headers.get('Content-Type', '')
+    assert actual_content_type.startswith(content_type), f"Expected {content_type} but got {actual_content_type}. Response content: {context.response.content}"
+
+@then('the response file should have size greater than {size:d}')
+def step_check_response_file_size(context, size):
+    response_file = io.BytesIO(context.response.content)
+    assert len(response_file.getvalue()) > size
+
+@then('the response PDF is not passworded')
+def step_check_response_pdf_not_passworded(context):
+    response_file = io.BytesIO(context.response.content)
+    reader = PdfReader(response_file)
+    assert not reader.is_encrypted
+
+@then('the response PDF is passworded')
+def step_check_response_pdf_passworded(context):
+    response_file = io.BytesIO(context.response.content)
+    try:
+        reader = PdfReader(response_file)
+        assert reader.is_encrypted
+    except PdfReadError as e:
+        raise AssertionError(f"Failed to read PDF: {str(e)}. Response content: {context.response.content}")
+    except Exception as e:
+        raise AssertionError(f"An error occurred: {str(e)}. Response content: {context.response.content}")
+
+@then('the response status code should be {status_code:d}')
+def step_check_response_status_code(context, status_code):
+    assert context.response.status_code == status_code, f"Expected status code {status_code} but got {context.response.status_code}"
+
+@then('the response should contain error message "{message}"')
+def step_check_response_error_message(context, message):
+    response_json = context.response.json()
+    assert response_json.get('error') == message, f"Expected error message '{message}' but got '{response_json.get('error')}'"
+
+@then('the response PDF should contain {page_count:d} pages')
+def step_check_response_pdf_page_count(context, page_count):
+    response_file = io.BytesIO(context.response.content)
+    reader = PdfReader(response_file)
+    assert len(reader.pages) == page_count, f"Expected {page_count} pages but got {len(reader.pages)} pages"
+
+@then('the response PDF metadata should include "{metadata_key}" as "{metadata_value}"')
+def step_check_response_pdf_metadata(context, metadata_key, metadata_value):
+    response_file = io.BytesIO(context.response.content)
+    reader = PdfReader(response_file)
+    metadata = reader.metadata
+    assert metadata.get("/" + metadata_key) == metadata_value, f"Expected {metadata_key} to be '{metadata_value}' but got '{metadata.get(metadata_key)}'"
+
+@then('the response file should have extension "{extension}"')
+def step_check_response_file_extension(context, extension):
+    content_disposition = context.response.headers.get('Content-Disposition', '')
+    filename = ""
+    if content_disposition:
+        parts = content_disposition.split(';')
+        for part in parts:
+            if part.strip().startswith('filename'):
+                filename = part.split('=')[1].strip().strip('"')
+                break
+    assert filename.endswith(extension), f"Expected file extension {extension} but got {filename}. Response content: {context.response.content}"
+
+@then('save the response file as "{filename}" for debugging')
+def step_save_response_file(context, filename):
+    with open(filename, 'wb') as f:
+        f.write(context.response.content)
+    print(f"Saved response content to {filename}")
+
+
+@then('the response PDF should contain {page_count:d} pages')
+def step_check_response_pdf_page_count(context, page_count):
+    response_file = io.BytesIO(context.response.content)
+    reader = PdfReader(io.BytesIO(response_file.getvalue()))
+    actual_page_count = len(reader.pages)
+    assert actual_page_count == page_count, f"Expected {page_count} pages but got {actual_page_count} pages"
+
+@then('the response ZIP should contain {file_count:d} files')
+def step_check_response_zip_file_count(context, file_count):
+    response_file = io.BytesIO(context.response.content)
+    with zipfile.ZipFile(io.BytesIO(response_file.getvalue())) as zip_file:
+      actual_file_count = len(zip_file.namelist())
+    assert actual_file_count == file_count, f"Expected {file_count} files but got {actual_file_count} files"
+
+@then('the response ZIP file should contain {doc_count:d} documents each having {pages_per_doc:d} pages')
+def step_check_response_zip_doc_page_count(context, doc_count, pages_per_doc):
+    response_file = io.BytesIO(context.response.content)
+    with zipfile.ZipFile(io.BytesIO(response_file.getvalue())) as zip_file:
+        actual_doc_count = len(zip_file.namelist())
+        assert actual_doc_count == doc_count, f"Expected {doc_count} documents but got {actual_doc_count} documents"
+        
+        for file_name in zip_file.namelist():
+            with zip_file.open(file_name) as pdf_file:
+                reader = PdfReader(pdf_file)
+                actual_pages_per_doc = len(reader.pages)
+                assert actual_pages_per_doc == pages_per_doc, f"Expected {pages_per_doc} pages per document but got {actual_pages_per_doc} pages in document {file_name}"

cucumber/requirements.txt

@@ -0,0 +1,5 @@
+behave
+requests
+PyPDF2
+reportlab
+PyCryptodome

exampleYmlFiles/docker-compose-latest-fat-security.yml

@@ -0,0 +1,34 @@
+version: '3.3'
+services:
+  stirling-pdf:
+    container_name: Stirling-PDF-Security-Fat
+    image: frooodle/s-pdf:latest-fat
+    deploy:
+      resources:
+        limits:
+          memory: 4G
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:8080/api/v1/info/status | grep -q 'UP' && curl -fL http://localhost:8080/ | grep -q 'Please sign in'"]
+      interval: 5s
+      timeout: 10s
+      retries: 16
+    ports:
+      - 8080:8080
+    volumes:
+      - /stirling/latest/data:/usr/share/tessdata:rw
+      - /stirling/latest/config:/configs:rw
+      - /stirling/latest/logs:/logs:rw
+    environment:
+      DOCKER_ENABLE_SECURITY: "true"
+      SECURITY_ENABLELOGIN: "true"
+      PUID: 1002
+      PGID: 1002
+      UMASK: "022"
+      SYSTEM_DEFAULTLOCALE: en-US
+      UI_APPNAME: Stirling-PDF
+      UI_HOMEDESCRIPTION: Demo site for Stirling-PDF Latest-fat with Security
+      UI_APPNAMENAVBAR: Stirling-PDF Latest-fat
+      SYSTEM_MAXFILESIZE: "100"
+      METRICS_ENABLED: "true"
+      SYSTEM_GOOGLEVISIBILITY: "true"
+    restart: on-failure:5

exampleYmlFiles/docker-compose-latest-security-with-sso.yml

@@ -13,7 +13,7 @@ services:
       timeout: 10s
       retries: 16
     ports:
-      - 8080:8080
+      - "8080:8080"
     volumes:
       - /stirling/latest/data:/usr/share/tessdata:rw
       - /stirling/latest/config:/configs:rw
@@ -22,10 +22,13 @@ services:
       DOCKER_ENABLE_SECURITY: "true"
       SECURITY_ENABLELOGIN: "true"
       SECURITY_OAUTH2_ENABLED: "true"
-      SECURITY_OAUTH2_AUTOCREATEUSER: "true" # This is set to true to allow auto-creation of non-existing users in Striling-PDF
+      SECURITY_OAUTH2_AUTOCREATEUSER: "true" # This is set to true to allow auto-creation of non-existing users in Stirling-PDF
       SECURITY_OAUTH2_ISSUER: "https://accounts.google.com"  # Change with any other provider that supports OpenID Connect Discovery (/.well-known/openid-configuration) end-point
       SECURITY_OAUTH2_CLIENTID: "<YOUR CLIENT ID>.apps.googleusercontent.com" # Client ID from your provider
       SECURITY_OAUTH2_CLIENTSECRET: "<YOUR CLIENT SECRET>"  # Client Secret from your provider
+      SECURITY_OAUTH2_SCOPES: "openid,profile,email" # Expected OAuth2 Scope
+      SECURITY_OAUTH2_USEASUSERNAME: "email" # Default is 'email'; custom fields can be used as the username
+      SECURITY_OAUTH2_PROVIDER: "google" # Set this to your OAuth provider's name, e.g., 'google' or 'keycloak'
       PUID: 1002
       PGID: 1002
       UMASK: "022"

exampleYmlFiles/docker-compose-latest-security.yml

@@ -13,7 +13,7 @@ services:
       timeout: 10s
       retries: 16
     ports:
-      - 8080:8080
+      - "8080:8080"
     volumes:
       - /stirling/latest/data:/usr/share/tessdata:rw
       - /stirling/latest/config:/configs:rw

exampleYmlFiles/docker-compose-latest-ultra-lite-security.yml

@@ -13,7 +13,7 @@ services:
       timeout: 10s
       retries: 16
     ports:
-      - 8080:8080
+      - "8080:8080"
     volumes:
       - /stirling/latest/data:/usr/share/tessdata:rw
       - /stirling/latest/config:/configs:rw

exampleYmlFiles/docker-compose-latest-ultra-lite.yml

@@ -13,7 +13,7 @@ services:
       timeout: 10s
       retries: 16
     ports:
-      - 8080:8080
+      - "8080:8080"
     volumes:
       - /stirling/latest/config:/configs:rw
       - /stirling/latest/logs:/logs:rw

exampleYmlFiles/docker-compose-latest.yml

@@ -13,7 +13,7 @@ services:
       timeout: 10s
       retries: 16
     ports:
-      - 8080:8080
+      - "8080:8080"
     volumes:
       - /stirling/latest/data:/usr/share/tessdata:rw
       - /stirling/latest/config:/configs:rw

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

pipeline/defaultWebUIConfigs/OCR images.json

@@ -0,0 +1,43 @@
+{
+  "name": "OCR images",
+  "pipeline": [
+    {
+      "operation": "/api/v1/convert/img/pdf",
+      "parameters": {
+        "fitOption": "fillPage",
+        "colorType": "color",
+        "autoRotate": true,
+        "fileInput": "automated"
+      }
+    },
+    {
+      "operation": "/api/v1/general/merge-pdfs",
+      "parameters": {
+        "sortType": "orderProvided",
+        "fileInput": "automated"
+      }
+    },
+    {
+      "operation": "/api/v1/misc/ocr-pdf",
+      "parameters": {
+        "languages": [
+          "eng"
+        ],
+        "sidecar": false,
+        "deskew": false,
+        "clean": false,
+        "cleanFinal": false,
+        "ocrType": "skip-text",
+        "ocrRenderType": "hocr",
+        "removeImagesAfter": false,
+        "fileInput": "automated"
+      }
+    }
+  ],
+  "_examples": {
+    "outputDir": "{outputFolder}/{folderName}",
+    "outputFileName": "{filename}-{pipelineName}-{date}-{time}"
+  },
+  "outputDir": "{outputFolder}",
+  "outputFileName": "{filename}"
+}

scripts/init-without-ocr.sh

@@ -11,14 +11,16 @@ if [ ! -z "$PGID" ] && [ "$PGID" != "$(getent group stirlingpdfgroup | cut -d: -
 fi
 umask "$UMASK" || true
 
-if [[ "$INSTALL_BOOK_AND_ADVANCED_HTML_OPS" == "true" ]]; then
+if [[ "$INSTALL_BOOK_AND_ADVANCED_HTML_OPS" == "true" && "$FAT_DOCKER" != "true" ]]; then
   apk add --no-cache calibre@testing
 fi
 
-/scripts/download-security-jar.sh
+if [[ "$FAT_DOCKER" != "true" ]]; then
+  /scripts/download-security-jar.sh	
+fi
 
 if [[ -n "$LANGS" ]]; then
-	/scripts/installFonts.sh $LANGS
+  /scripts/installFonts.sh $LANGS
 fi
 
 echo "Setting permissions and ownership for necessary directories..."

scripts/translation_status.toml

@@ -13,6 +13,14 @@ ignore = [
     'language.direction',
 ]
 
+[cs_CZ]
+ignore = [
+    'info',
+    'language.direction',
+    'pipeline.header',
+    'text',
+]
+
 [de_DE]
 ignore = [
     'AddStampRequest.alphabet',
@@ -53,6 +61,7 @@ ignore = [
 [fr_FR]
 ignore = [
     'language.direction',
+    'sponsor',
 ]
 
 [hi_IN]
@@ -60,6 +69,16 @@ ignore = [
     'language.direction',
 ]
 
+[hr_HR]
+ignore = [
+    'font',
+    'home.pipeline.title',
+    'info',
+    'language.direction',
+    'pdfOrganiser.tags',
+    'showJS.tags',
+]
+
 [hu_HU]
 ignore = [
     'language.direction',
@@ -98,6 +117,11 @@ ignore = [
     'language.direction',
 ]
 
+[no_NB]
+ignore = [
+    'language.direction',
+]
+
 [pl_PL]
 ignore = [
     'language.direction',
@@ -123,6 +147,11 @@ ignore = [
     'language.direction',
 ]
 
+[sk_SK]
+ignore = [
+    'language.direction',
+]
+
 [sr_LATN_RS]
 ignore = [
     'language.direction',

src/main/java/stirling/software/SPDF/LibreOfficeListener.java

@@ -6,11 +6,15 @@ import java.net.Socket;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import io.github.pixee.security.SystemCommand;
 
 public class LibreOfficeListener {
 
-    private static final long ACTIVITY_TIMEOUT = 20 * 60 * 1000; // 20 minutes
+    private static final Logger logger = LoggerFactory.getLogger(LibreOfficeListener.class);
+    private static final long ACTIVITY_TIMEOUT = 20L * 60 * 1000; // 20 minutes
 
     private static final LibreOfficeListener INSTANCE = new LibreOfficeListener();
     private static final int LISTENER_PORT = 2002;
@@ -27,14 +31,12 @@ public class LibreOfficeListener {
     private LibreOfficeListener() {}
 
     private boolean isListenerRunning() {
-        try {
-            System.out.println("waiting for listener to start");
-            Socket socket = new Socket();
+        System.out.println("waiting for listener to start");
+        try (Socket socket = new Socket()) {
             socket.connect(
                     new InetSocketAddress("localhost", 2002), 1000); // Timeout after 1 second
-            socket.close();
             return true;
-        } catch (IOException e) {
+        } catch (Exception e) {
             return false;
         }
     }
@@ -63,6 +65,7 @@ public class LibreOfficeListener {
                         try {
                             Thread.sleep(5000); // Check for inactivity every 5 seconds
                         } catch (InterruptedException e) {
+                            Thread.currentThread().interrupt();
                             break;
                         }
                     }
@@ -80,8 +83,8 @@ public class LibreOfficeListener {
             try {
                 Thread.sleep(1000);
             } catch (InterruptedException e) {
-                // TODO Auto-generated catch block
-                e.printStackTrace();
+                Thread.currentThread().interrupt();
+                logger.error("exception", e);
             } // Check every 1 second
         }
     }

src/main/java/stirling/software/SPDF/SPdfApplication.java

@@ -5,6 +5,8 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -65,14 +67,36 @@ public class SPdfApplication {
 
         SpringApplication app = new SpringApplication(SPdfApplication.class);
         app.addInitializers(new ConfigInitializer());
+        Map<String, String> propertyFiles = new HashMap<>();
+
+        // stirling pdf settings file
         if (Files.exists(Paths.get("configs/settings.yml"))) {
-            app.setDefaultProperties(
-                    Collections.singletonMap(
-                            "spring.config.additional-location", "file:configs/settings.yml"));
+            propertyFiles.put("spring.config.additional-location", "file:configs/settings.yml");
         } else {
             logger.warn(
                     "External configuration file 'configs/settings.yml' does not exist. Using default configuration and environment configuration instead.");
         }
+
+        // custom javs settings file
+        if (Files.exists(Paths.get("configs/custom_settings.yml"))) {
+            String existing = propertyFiles.getOrDefault("spring.config.additional-location", "");
+            if (!existing.isEmpty()) {
+                existing += ",";
+            }
+            propertyFiles.put(
+                    "spring.config.additional-location",
+                    existing + "file:configs/custom_settings.yml");
+        } else {
+            logger.warn("Custom configuration file 'configs/custom_settings.yml' does not exist.");
+        }
+
+        if (!propertyFiles.isEmpty()) {
+            app.setDefaultProperties(
+                    Collections.singletonMap(
+                            "spring.config.additional-location",
+                            propertyFiles.get("spring.config.additional-location")));
+        }
+
         app.run(args);
 
         try {

src/main/java/stirling/software/SPDF/config/AppConfig.java

@@ -2,9 +2,13 @@ package stirling.software.SPDF.config;
 
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Properties;
+import java.util.function.Predicate;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
@@ -22,6 +26,8 @@ import stirling.software.SPDF.model.ApplicationProperties;
 @Lazy
 public class AppConfig {
 
+    private static final Logger logger = LoggerFactory.getLogger(AppConfig.class);
+
     @Autowired ApplicationProperties applicationProperties;
 
     @Bean
@@ -54,7 +60,7 @@ public class AppConfig {
             props.load(resource.getInputStream());
             return props.getProperty("version");
         } catch (IOException e) {
-            e.printStackTrace();
+            logger.error("exception", e);
         }
         return "0.0.0";
     }
@@ -108,4 +114,26 @@ public class AppConfig {
     public boolean missingActivSecurity() {
         return false;
     }
+
+    @Bean(name = "watchedFoldersDir")
+    public String watchedFoldersDir() {
+        return "./pipeline/watchedFolders/";
+    }
+
+    @Bean(name = "finishedFoldersDir")
+    public String finishedFoldersDir() {
+        return "./pipeline/finishedFolders/";
+    }
+
+    @Bean(name = "directoryFilter")
+    public Predicate<Path> processPDFOnlyFilter() {
+        return path -> {
+            if (Files.isDirectory(path)) {
+                return !path.toString().contains("processing");
+            } else {
+                String fileName = path.getFileName().toString();
+                return fileName.endsWith(".pdf");
+            }
+        };
+    }
 }

src/main/java/stirling/software/SPDF/config/CleanUrlInterceptor.java

@@ -15,7 +15,14 @@ public class CleanUrlInterceptor implements HandlerInterceptor {
 
     private static final List<String> ALLOWED_PARAMS =
             Arrays.asList(
-                    "lang", "endpoint", "endpoints", "logout", "error", "file", "messageType");
+                    "lang",
+                    "endpoint",
+                    "endpoints",
+                    "logout",
+                    "error",
+                    "erroroauth",
+                    "file",
+                    "messageType");
 
     @Override
     public boolean preHandle(
@@ -51,7 +58,8 @@ public class CleanUrlInterceptor implements HandlerInterceptor {
 
                 // Redirect to the URL with only allowed query parameters
                 String redirectUrl = requestURI + "?" + newQueryString;
-                response.sendRedirect(redirectUrl);
+
+                response.sendRedirect(request.getContextPath() + redirectUrl);
                 return false;
             }
         }

src/main/java/stirling/software/SPDF/config/ConfigInitializer.java

@@ -1,20 +1,13 @@
 package stirling.software.SPDF.config;
 
-import java.io.BufferedReader;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.nio.charset.StandardCharsets;
+import java.net.URISyntaxException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.ArrayList;
 import java.util.List;
-import java.util.Optional;
-import java.util.Set;
-import java.util.function.Function;
-import java.util.stream.Collectors;
 
 import org.springframework.context.ApplicationContextInitializer;
 import org.springframework.context.ConfigurableApplicationContext;
@@ -26,12 +19,12 @@ public class ConfigInitializer
     public void initialize(ConfigurableApplicationContext applicationContext) {
         try {
             ensureConfigExists();
-        } catch (IOException e) {
+        } catch (Exception e) {
             throw new RuntimeException("Failed to initialize application configuration", e);
         }
     }
 
-    public void ensureConfigExists() throws IOException {
+    public void ensureConfigExists() throws IOException, URISyntaxException {
         // Define the path to the external config directory
         Path destPath = Paths.get("configs", "settings.yml");
 
@@ -51,170 +44,95 @@ public class ConfigInitializer
                 }
             }
         } else {
-            // If user file exists, we need to merge it with the template from the classpath
-            List<String> templateLines;
-            try (InputStream in =
-                    getClass().getClassLoader().getResourceAsStream("settings.yml.template")) {
-                templateLines =
-                        new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8))
-                                .lines()
-                                .collect(Collectors.toList());
-            }
+            //            Path templatePath =
+            //                    Paths.get(
+            //                            getClass()
+            //                                    .getClassLoader()
+            //                                    .getResource("settings.yml.template")
+            //                                    .toURI());
+            //            Path userPath = Paths.get("configs", "settings.yml");
+            //
+            //            List<String> templateLines = Files.readAllLines(templatePath);
+            //            List<String> userLines =
+            //                    Files.exists(userPath) ? Files.readAllLines(userPath) : new
+            // ArrayList<>();
+            //
+            //            List<String> resultLines = new ArrayList<>();
+            //            int position = 0;
+            //            for (String templateLine : templateLines) {
+            //                // Check if the line is a comment
+            //                if (templateLine.trim().startsWith("#")) {
+            //                    String entry = templateLine.trim().substring(1).trim();
+            //                    if (!entry.isEmpty()) {
+            //                        // Check if this comment has been uncommented in userLines
+            //                        String key = entry.split(":")[0].trim();
+            //                        addLine(resultLines, userLines, templateLine, key, position);
+            //                    } else {
+            //                        resultLines.add(templateLine);
+            //                    }
+            //                }
+            //                // Check if the line is a key-value pair
+            //                else if (templateLine.contains(":")) {
+            //                    String key = templateLine.split(":")[0].trim();
+            //                    addLine(resultLines, userLines, templateLine, key, position);
+            //                }
+            //                // Handle empty lines
+            //                else if (templateLine.trim().length() == 0) {
+            //                    resultLines.add("");
+            //                }
+            //                position++;
+            //            }
+            //
+            //            // Write the result to the user settings file
+            //            Files.write(userPath, resultLines);
+        }
 
-            mergeYamlFiles(templateLines, destPath, destPath);
+        Path customSettingsPath = Paths.get("configs", "custom_settings.yml");
+        if (!Files.exists(customSettingsPath)) {
+            Files.createFile(customSettingsPath);
         }
     }
 
-    public void mergeYamlFiles(List<String> templateLines, Path userFilePath, Path outputPath)
-            throws IOException {
-        List<String> userLines = Files.readAllLines(userFilePath);
-        List<String> mergedLines = new ArrayList<>();
-        boolean insideAutoGenerated = false;
-        boolean beforeFirstKey = true;
-
-        Function<String, Boolean> isCommented = line -> line.trim().startsWith("#");
-        Function<String, String> extractKey =
-                line -> {
-                    String[] parts = line.split(":");
-                    return parts.length > 0 ? parts[0].trim().replace("#", "").trim() : "";
-                };
-
-        Function<String, Integer> getIndentationLevel =
-                line -> {
-                    int count = 0;
-                    for (char ch : line.toCharArray()) {
-                        if (ch == ' ') count++;
-                        else break;
-                    }
-                    return count;
-                };
-
-        Set<String> userKeys = userLines.stream().map(extractKey).collect(Collectors.toSet());
-
-        for (String line : templateLines) {
-            String key = extractKey.apply(line);
-
-            if ("AutomaticallyGenerated:".equalsIgnoreCase(line.trim())) {
-                insideAutoGenerated = true;
-                mergedLines.add(line);
-                continue;
-            } else if (insideAutoGenerated && line.trim().isEmpty()) {
-                insideAutoGenerated = false;
-                mergedLines.add(line);
-                continue;
-            }
-
-            if (beforeFirstKey && (isCommented.apply(line) || line.trim().isEmpty())) {
-                // Handle top comments and empty lines before the first key.
-                mergedLines.add(line);
-                continue;
-            }
-
-            if (!key.isEmpty()) beforeFirstKey = false;
-
-            if (userKeys.contains(key)) {
-                // If user has any version (commented or uncommented) of this key, skip the
-                // template line
-                Optional<String> userValue =
-                        userLines.stream()
-                                .filter(
-                                        l ->
-                                                extractKey.apply(l).equalsIgnoreCase(key)
-                                                        && !isCommented.apply(l))
-                                .findFirst();
-                if (userValue.isPresent()) mergedLines.add(userValue.get());
-                continue;
-            }
-
-            if (isCommented.apply(line) || line.trim().isEmpty() || !userKeys.contains(key)) {
-                mergedLines.add(
-                        line); // If line is commented, empty or key not present in user's file,
-                // retain the
-                // template line
-                continue;
-            }
-        }
-
-        // Add any additional uncommented user lines that are not present in the
-        // template
-        for (String userLine : userLines) {
-            String userKey = extractKey.apply(userLine);
-            boolean isPresentInTemplate =
-                    templateLines.stream()
-                            .map(extractKey)
-                            .anyMatch(templateKey -> templateKey.equalsIgnoreCase(userKey));
-            if (!isPresentInTemplate && !isCommented.apply(userLine)) {
-                if (!childOfTemplateEntry(
-                        isCommented,
-                        extractKey,
-                        getIndentationLevel,
-                        userLines,
-                        userLine,
-                        templateLines)) {
-                    // check if userLine is a child of a entry within templateLines or not, if child
-                    // of parent in templateLines then dont add to mergedLines, if anything else
-                    // then add
-                    mergedLines.add(userLine);
-                }
-            }
-        }
-
-        Files.write(outputPath, mergedLines, StandardCharsets.UTF_8);
-    }
-
-    // New method to check if a userLine is a child of an entry in templateLines
-    boolean childOfTemplateEntry(
-            Function<String, Boolean> isCommented,
-            Function<String, String> extractKey,
-            Function<String, Integer> getIndentationLevel,
+    // TODO check parent value instead of just indent lines for duplicate keys (like enabled etc)
+    private static void addLine(
+            List<String> resultLines,
             List<String> userLines,
-            String userLine,
-            List<String> templateLines) {
-        String userKey = extractKey.apply(userLine).trim();
-        int userIndentation = getIndentationLevel.apply(userLine);
-
-        // Start by assuming the line is not a child of an entry in templateLines
-        boolean isChild = false;
-
-        // Iterate backwards through userLines from the current line to find any parent
-        for (int i = userLines.indexOf(userLine) - 1; i >= 0; i--) {
-            String potentialParentLine = userLines.get(i);
-            int parentIndentation = getIndentationLevel.apply(potentialParentLine);
-
-            // Check if we've reached a potential parent based on indentation
-            if (parentIndentation < userIndentation) {
-                String parentKey = extractKey.apply(potentialParentLine).trim();
-
-                // Now, check if this potential parent or any of its parents exist in templateLines
-                boolean parentExistsInTemplate =
-                        templateLines.stream()
-                                .filter(line -> !isCommented.apply(line)) // Skip commented lines
-                                .anyMatch(
-                                        templateLine -> {
-                                            String templateKey =
-                                                    extractKey.apply(templateLine).trim();
-                                            return parentKey.equalsIgnoreCase(templateKey);
-                                        });
-
-                if (!parentExistsInTemplate) {
-                    // If the parent does not exist in template, check the next level parent
-                    userIndentation =
-                            parentIndentation; // Update userIndentation to the parent's indentation
-                    // for next iteration
-                    if (parentIndentation == 0) {
-                        // If we've reached the top-level parent and it's not in template, the
-                        // original line is considered not a child
-                        isChild = false;
-                        break;
-                    }
-                } else {
-                    // If any parent exists in template, the original line is considered a child
-                    isChild = true;
+            String templateLine,
+            String key,
+            int position) {
+        boolean added = false;
+        int templateIndentationLevel = getIndentationLevel(templateLine);
+        int pos = 0;
+        for (String settingsLine : userLines) {
+            if (settingsLine.trim().startsWith(key + ":") && position == pos) {
+                int settingsIndentationLevel = getIndentationLevel(settingsLine);
+                // Check if it is correct settingsLine and has the same parent as templateLine
+                if (settingsIndentationLevel == templateIndentationLevel) {
+                    resultLines.add(settingsLine);
+                    added = true;
                     break;
                 }
             }
+            pos++;
         }
+        if (!added) {
+            resultLines.add(templateLine);
+        }
+    }
 
-        return isChild; // Return true if the line is not a child of any entry in templateLines
+    private static int getIndentationLevel(String line) {
+        int indentationLevel = 0;
+        String trimmedLine = line.trim();
+        if (trimmedLine.startsWith("#")) {
+            line = trimmedLine.substring(1);
+        }
+        for (char c : line.toCharArray()) {
+            if (c == ' ') {
+                indentationLevel++;
+            } else {
+                break;
+            }
+        }
+        return indentationLevel;
     }
 }

src/main/java/stirling/software/SPDF/config/EndpointConfiguration.java

@@ -116,6 +116,7 @@ public class EndpointConfiguration {
         addEndpointToGroup("Security", "change-permissions");
         addEndpointToGroup("Security", "add-watermark");
         addEndpointToGroup("Security", "cert-sign");
+        addEndpointToGroup("Security", "remove-cert-sign");
         addEndpointToGroup("Security", "sanitize-pdf");
         addEndpointToGroup("Security", "auto-redact");
 
@@ -200,6 +201,7 @@ public class EndpointConfiguration {
         addEndpointToGroup("Java", "extract-images");
         addEndpointToGroup("Java", "change-metadata");
         addEndpointToGroup("Java", "cert-sign");
+        addEndpointToGroup("Java", "remove-cert-sign");
         addEndpointToGroup("Java", "multi-page-layout");
         addEndpointToGroup("Java", "scale-pages");
         addEndpointToGroup("Java", "add-page-numbers");

src/main/java/stirling/software/SPDF/config/FileFallbackTemplateResolver.java

@@ -1,16 +1,18 @@
 package stirling.software.SPDF.config;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.Map;
 
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.ResourceLoader;
 import org.thymeleaf.IEngineConfiguration;
 import org.thymeleaf.templateresolver.AbstractConfigurableTemplateResolver;
-import org.thymeleaf.templateresource.ClassLoaderTemplateResource;
 import org.thymeleaf.templateresource.FileTemplateResource;
 import org.thymeleaf.templateresource.ITemplateResource;
 
+import stirling.software.SPDF.model.InputStreamTemplateResource;
+
 public class FileFallbackTemplateResolver extends AbstractConfigurableTemplateResolver {
 
     private final ResourceLoader resourceLoader;
@@ -37,12 +39,16 @@ public class FileFallbackTemplateResolver extends AbstractConfigurableTemplateRe
                 return new FileTemplateResource(resource.getFile().getPath(), characterEncoding);
             }
         } catch (IOException e) {
-            
+
         }
 
-        return new ClassLoaderTemplateResource(
-                Thread.currentThread().getContextClassLoader(),
-                "classpath:/templates/" + resourceName,
-                characterEncoding);
+        InputStream inputStream =
+                Thread.currentThread()
+                        .getContextClassLoader()
+                        .getResourceAsStream("templates/" + resourceName);
+        if (inputStream != null) {
+            return new InputStreamTemplateResource(inputStream, "UTF-8");
+        }
+        return null;
     }
 }

src/main/java/stirling/software/SPDF/config/MetricsFilter.java

@@ -36,7 +36,6 @@ public class MetricsFilter extends OncePerRequestFilter {
                 || uri.startsWith("/v1/api-docs")
                 || uri.endsWith("robots.txt")
                 || uri.startsWith("/images")
-                || uri.startsWith("/images")
                 || uri.endsWith(".png")
                 || uri.endsWith(".ico")
                 || uri.endsWith(".css")

src/main/java/stirling/software/SPDF/config/security/AppUpdateAuthService.java

@@ -18,6 +18,7 @@ class AppUpdateAuthService implements ShowAdminInterface {
     @Autowired private UserRepository userRepository;
     @Autowired private ApplicationProperties applicationProperties;
 
+    @Override
     public boolean getShowUpdateOnlyAdmins() {
         boolean showUpdate = applicationProperties.getSystem().getShowUpdate();
         if (!showUpdate) {

src/main/java/stirling/software/SPDF/config/security/CustomAuthenticationFailureHandler.java

@@ -3,27 +3,31 @@ package stirling.software.SPDF.config.security;
 import java.io.IOException;
 import java.util.Optional;
 
-import org.springframework.beans.factory.annotation.Autowired;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.security.authentication.BadCredentialsException;
+import org.springframework.security.authentication.InternalAuthenticationServiceException;
 import org.springframework.security.authentication.LockedException;
 import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
-import org.springframework.stereotype.Component;
 
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import stirling.software.SPDF.model.User;
 
-@Component
 public class CustomAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler {
 
-    @Autowired private final LoginAttemptService loginAttemptService;
+    private LoginAttemptService loginAttemptService;
 
-    @Autowired private final UserService userService; // Inject the UserService
+    private UserService userService;
+
+    private static final Logger logger =
+            LoggerFactory.getLogger(CustomAuthenticationFailureHandler.class);
 
     public CustomAuthenticationFailureHandler(
-            LoginAttemptService loginAttemptService, UserService userService) {
+            final LoginAttemptService loginAttemptService, UserService userService) {
         this.loginAttemptService = loginAttemptService;
         this.userService = userService;
     }
@@ -34,29 +38,43 @@ public class CustomAuthenticationFailureHandler extends SimpleUrlAuthenticationF
             HttpServletResponse response,
             AuthenticationException exception)
             throws IOException, ServletException {
+
         String ip = request.getRemoteAddr();
-        logger.error("Failed login attempt from IP: " + ip);
+        logger.error("Failed login attempt from IP: {}", ip);
+
+        String contextPath = request.getContextPath();
+
+        if (exception.getClass().isAssignableFrom(InternalAuthenticationServiceException.class)
+                || "Password must not be null".equalsIgnoreCase(exception.getMessage())) {
+            response.sendRedirect(contextPath + "/login?error=oauth2AuthenticationError");
+            return;
+        }
 
         String username = request.getParameter("username");
-        if (!isDemoUser(username)) {
-            if (loginAttemptService.loginAttemptCheck(username)) {
-                setDefaultFailureUrl("/login?error=locked");
+        Optional<User> optUser = userService.findByUsernameIgnoreCase(username);
 
-            } else {
-                if (exception.getClass().isAssignableFrom(LockedException.class)) {
-                    setDefaultFailureUrl("/login?error=locked");
-                }
+        if (username != null && optUser.isPresent() && !isDemoUser(optUser)) {
+            logger.info(
+                    "Remaining attempts for user {}: {}",
+                    optUser.get().getUsername(),
+                    loginAttemptService.getRemainingAttempts(username));
+            loginAttemptService.loginFailed(username);
+            if (loginAttemptService.isBlocked(username)
+                    || exception.getClass().isAssignableFrom(LockedException.class)) {
+                response.sendRedirect(contextPath + "/login?error=locked");
+                return;
             }
         }
-        if (exception.getClass().isAssignableFrom(BadCredentialsException.class)) {
-            setDefaultFailureUrl("/login?error=badcredentials");
+        if (exception.getClass().isAssignableFrom(BadCredentialsException.class)
+                || exception.getClass().isAssignableFrom(UsernameNotFoundException.class)) {
+            response.sendRedirect(contextPath + "/login?error=badcredentials");
+            return;
         }
 
         super.onAuthenticationFailure(request, response, exception);
     }
 
-    private boolean isDemoUser(String username) {
-        Optional<User> user = userService.findByUsernameIgnoreCase(username);
+    private boolean isDemoUser(Optional<User> user) {
         return user.isPresent()
                 && user.get().getAuthorities().stream()
                         .anyMatch(authority -> "ROLE_DEMO_USER".equals(authority.getAuthority()));

src/main/java/stirling/software/SPDF/config/security/CustomAuthenticationSuccessHandler.java

@@ -2,11 +2,9 @@ package stirling.software.SPDF.config.security;
 
 import java.io.IOException;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
 import org.springframework.security.web.savedrequest.SavedRequest;
-import org.springframework.stereotype.Component;
 
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
@@ -14,25 +12,30 @@ import jakarta.servlet.http.HttpServletResponse;
 import jakarta.servlet.http.HttpSession;
 import stirling.software.SPDF.utils.RequestUriUtils;
 
-@Component
 public class CustomAuthenticationSuccessHandler
         extends SavedRequestAwareAuthenticationSuccessHandler {
 
-    @Autowired private LoginAttemptService loginAttemptService;
+    private LoginAttemptService loginAttemptService;
+
+    public CustomAuthenticationSuccessHandler(LoginAttemptService loginAttemptService) {
+        this.loginAttemptService = loginAttemptService;
+    }
 
     @Override
     public void onAuthenticationSuccess(
             HttpServletRequest request, HttpServletResponse response, Authentication authentication)
             throws ServletException, IOException {
-        String username = request.getParameter("username");
-        loginAttemptService.loginSucceeded(username);
+
+        String userName = request.getParameter("username");
+        loginAttemptService.loginSucceeded(userName);
 
         // Get the saved request
         HttpSession session = request.getSession(false);
         SavedRequest savedRequest =
-                session != null
+                (session != null)
                         ? (SavedRequest) session.getAttribute("SPRING_SECURITY_SAVED_REQUEST")
                         : null;
+
         if (savedRequest != null
                 && !RequestUriUtils.isStaticResource(savedRequest.getRedirectUrl())) {
             // Redirect to the original destination

src/main/java/stirling/software/SPDF/config/security/CustomLogoutSuccessHandler.java

@@ -2,42 +2,32 @@ package stirling.software.SPDF.config.security;
 
 import java.io.IOException;
 
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.session.SessionRegistry;
+import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
 
+import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.servlet.http.HttpSession;
-import jakarta.servlet.ServletException;
-import org.springframework.context.annotation.Bean;
-import org.springframework.security.core.Authentication;
-import org.springframework.security.core.session.SessionRegistry;
-import org.springframework.security.core.session.SessionRegistryImpl;
-import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
 
-public class CustomLogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler
-{
-    @Bean
-    public SessionRegistry sessionRegistry() {
-        return new SessionRegistryImpl();
-    }
+public class CustomLogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler {
+
+    @Autowired SessionRegistry sessionRegistry;
 
     @Override
-    public void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException
-    {
+    public void onLogoutSuccess(
+            HttpServletRequest request, HttpServletResponse response, Authentication authentication)
+            throws IOException, ServletException {
         HttpSession session = request.getSession(false);
         if (session != null) {
             String sessionId = session.getId();
-            sessionRegistry()
-                    .removeSessionInformation(
-                            sessionId);
+            sessionRegistry.removeSessionInformation(sessionId);
+            session.invalidate();
+            logger.debug("Session invalidated: " + sessionId);
         }
 
-        if(request.getParameter("oauth2AutoCreateDisabled") != null)
-        {
-            response.sendRedirect(request.getContextPath()+"/login?error=oauth2AutoCreateDisabled");
-        }
-        else
-        {
-            response.sendRedirect(request.getContextPath() + "/login?logout=true");
-        }
+        response.sendRedirect(request.getContextPath() + "/login?logout=true");
     }
-}
+}

src/main/java/stirling/software/SPDF/config/security/CustomUserDetailsService.java

@@ -39,6 +39,10 @@ public class CustomUserDetailsService implements UserDetailsService {
                     "Your account has been locked due to too many failed login attempts.");
         }
 
+        if (!user.hasPassword()) {
+            throw new IllegalArgumentException("Password must not be null");
+        }
+
         return new org.springframework.security.core.userdetails.User(
                 user.getUsername(),
                 user.getPassword(),

src/main/java/stirling/software/SPDF/config/security/FirstLoginFilter.java

@@ -44,7 +44,7 @@ public class FirstLoginFilter extends OncePerRequestFilter {
                     && user.isPresent()
                     && user.get().isFirstLogin()
                     && !"/change-creds".equals(requestURI)) {
-                response.sendRedirect("/change-creds");
+                response.sendRedirect(request.getContextPath() + "/change-creds");
                 return;
             }
         }

src/main/java/stirling/software/SPDF/config/security/InitialSecuritySetup.java

@@ -7,6 +7,8 @@ import java.nio.file.Paths;
 import java.util.List;
 import java.util.UUID;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -19,40 +21,67 @@ public class InitialSecuritySetup {
 
     @Autowired private UserService userService;
 
-    @Autowired ApplicationProperties applicationProperties;
+    @Autowired private ApplicationProperties applicationProperties;
+
+    private static final Logger logger = LoggerFactory.getLogger(InitialSecuritySetup.class);
 
     @PostConstruct
     public void init() {
         if (!userService.hasUsers()) {
-
-            String initialUsername =
-                    applicationProperties.getSecurity().getInitialLogin().getUsername();
-            String initialPassword =
-                    applicationProperties.getSecurity().getInitialLogin().getPassword();
-            if (initialUsername != null && initialPassword != null) {
-                userService.saveUser(initialUsername, initialPassword, Role.ADMIN.getRoleId());
-            } else {
-                initialUsername = "admin";
-                initialPassword = "stirling";
-                userService.saveUser(
-                        initialUsername, initialPassword, Role.ADMIN.getRoleId(), true);
-            }
+            initializeAdminUser();
         }
+        initializeInternalApiUser();
+    }
+
+    @PostConstruct
+    public void initSecretKey() throws IOException {
+        String secretKey = applicationProperties.getAutomaticallyGenerated().getKey();
+        if (!isValidUUID(secretKey)) {
+            secretKey = UUID.randomUUID().toString(); // Generating a random UUID as the secret key
+            saveKeyToConfig(secretKey);
+        }
+    }
+
+    private void initializeAdminUser() {
+        String initialUsername =
+                applicationProperties.getSecurity().getInitialLogin().getUsername();
+        String initialPassword =
+                applicationProperties.getSecurity().getInitialLogin().getPassword();
+
+        if (initialUsername != null
+                && !initialUsername.isEmpty()
+                && initialPassword != null
+                && !initialPassword.isEmpty()
+                && !userService.findByUsernameIgnoreCase(initialUsername).isPresent()) {
+            try {
+                userService.saveUser(initialUsername, initialPassword, Role.ADMIN.getRoleId());
+                logger.info("Admin user created: " + initialUsername);
+            } catch (IllegalArgumentException e) {
+                logger.error("Failed to initialize security setup", e);
+                System.exit(1);
+            }
+        } else {
+            createDefaultAdminUser();
+        }
+    }
+
+    private void createDefaultAdminUser() {
+        String defaultUsername = "admin";
+        String defaultPassword = "stirling";
+        if (!userService.findByUsernameIgnoreCase(defaultUsername).isPresent()) {
+            userService.saveUser(defaultUsername, defaultPassword, Role.ADMIN.getRoleId(), true);
+            logger.info("Default admin user created: " + defaultUsername);
+        }
+    }
+
+    private void initializeInternalApiUser() {
         if (!userService.usernameExistsIgnoreCase(Role.INTERNAL_API_USER.getRoleId())) {
             userService.saveUser(
                     Role.INTERNAL_API_USER.getRoleId(),
                     UUID.randomUUID().toString(),
                     Role.INTERNAL_API_USER.getRoleId());
             userService.addApiKeyToUser(Role.INTERNAL_API_USER.getRoleId());
-        }
-    }
-
-    @PostConstruct
-    public void initSecretKey() throws IOException {
-        String secretKey = applicationProperties.getAutomaticallyGenerated().getKey();
-        if (secretKey == null || secretKey.isEmpty()) {
-            secretKey = UUID.randomUUID().toString(); // Generating a random UUID as the secret key
-            saveKeyToConfig(secretKey);
+            logger.info("Internal API user created: " + Role.INTERNAL_API_USER.getRoleId());
         }
     }
 
@@ -85,4 +114,16 @@ public class InitialSecuritySetup {
         // Write back to the file
         Files.write(path, lines);
     }
+
+    private boolean isValidUUID(String uuid) {
+        if (uuid == null) {
+            return false;
+        }
+        try {
+            UUID.fromString(uuid);
+            return true;
+        } catch (IllegalArgumentException e) {
+            return false;
+        }
+    }
 }

src/main/java/stirling/software/SPDF/config/security/LoginAttemptService.java

@@ -3,6 +3,8 @@ package stirling.software.SPDF.config.security;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
@@ -15,44 +17,61 @@ public class LoginAttemptService {
 
     @Autowired ApplicationProperties applicationProperties;
 
-    private int MAX_ATTEMPTS;
+    private static final Logger logger = LoggerFactory.getLogger(LoginAttemptService.class);
+
+    private int MAX_ATTEMPT;
     private long ATTEMPT_INCREMENT_TIME;
+    private ConcurrentHashMap<String, AttemptCounter> attemptsCache;
 
     @PostConstruct
     public void init() {
-        MAX_ATTEMPTS = applicationProperties.getSecurity().getLoginAttemptCount();
+        MAX_ATTEMPT = applicationProperties.getSecurity().getLoginAttemptCount();
         ATTEMPT_INCREMENT_TIME =
                 TimeUnit.MINUTES.toMillis(
                         applicationProperties.getSecurity().getLoginResetTimeMinutes());
+        attemptsCache = new ConcurrentHashMap<>();
     }
 
-    private final ConcurrentHashMap<String, AttemptCounter> attemptsCache =
-            new ConcurrentHashMap<>();
-
     public void loginSucceeded(String key) {
-        attemptsCache.remove(key);
+        if (key == null || key.trim().isEmpty()) {
+            return;
+        }
+        attemptsCache.remove(key.toLowerCase());
     }
 
-    public boolean loginAttemptCheck(String key) {
-        attemptsCache.compute(
-                key,
-                (k, attemptCounter) -> {
-                    if (attemptCounter == null
-                            || attemptCounter.shouldReset(ATTEMPT_INCREMENT_TIME)) {
-                        return new AttemptCounter();
-                    } else {
-                        attemptCounter.increment();
-                        return attemptCounter;
-                    }
-                });
-        return attemptsCache.get(key).getAttemptCount() >= MAX_ATTEMPTS;
+    public void loginFailed(String key) {
+        if (key == null || key.trim().isEmpty()) return;
+
+        AttemptCounter attemptCounter = attemptsCache.get(key.toLowerCase());
+        if (attemptCounter == null) {
+            attemptCounter = new AttemptCounter();
+            attemptsCache.put(key.toLowerCase(), attemptCounter);
+        } else {
+            if (attemptCounter.shouldReset(ATTEMPT_INCREMENT_TIME)) {
+                attemptCounter.reset();
+            }
+            attemptCounter.increment();
+        }
     }
 
     public boolean isBlocked(String key) {
-        AttemptCounter attemptCounter = attemptsCache.get(key);
-        if (attemptCounter != null) {
-            return attemptCounter.getAttemptCount() >= MAX_ATTEMPTS;
+        if (key == null || key.trim().isEmpty()) return false;
+        AttemptCounter attemptCounter = attemptsCache.get(key.toLowerCase());
+        if (attemptCounter == null) {
+            return false;
         }
-        return false;
+
+        return attemptCounter.getAttemptCount() >= MAX_ATTEMPT;
+    }
+
+    public int getRemainingAttempts(String key) {
+        if (key == null || key.trim().isEmpty()) return MAX_ATTEMPT;
+
+        AttemptCounter attemptCounter = attemptsCache.get(key.toLowerCase());
+        if (attemptCounter == null) {
+            return MAX_ATTEMPT;
+        }
+
+        return MAX_ATTEMPT - attemptCounter.getAttemptCount();
     }
 }

src/main/java/stirling/software/SPDF/config/security/SecurityConfiguration.java

@@ -1,8 +1,9 @@
 package stirling.software.SPDF.config.security;
 
-import jakarta.servlet.ServletException;
-import jakarta.servlet.http.HttpServletRequest;
-import jakarta.servlet.http.HttpServletResponse;
+import java.util.*;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
@@ -14,36 +15,45 @@ import org.springframework.security.config.annotation.method.configuration.Enabl
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.config.http.SessionCreationPolicy;
-import org.springframework.security.core.Authentication;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.authority.mapping.GrantedAuthoritiesMapper;
 import org.springframework.security.core.session.SessionRegistry;
 import org.springframework.security.core.session.SessionRegistryImpl;
-import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.security.oauth2.client.registration.ClientRegistration;
+import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
+import org.springframework.security.oauth2.client.registration.ClientRegistrations;
 import org.springframework.security.oauth2.client.registration.InMemoryClientRegistrationRepository;
-import org.springframework.security.oauth2.core.user.OAuth2User;
+import org.springframework.security.oauth2.core.user.OAuth2UserAuthority;
 import org.springframework.security.web.SecurityFilterChain;
-import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 import org.springframework.security.web.authentication.rememberme.PersistentTokenRepository;
 import org.springframework.security.web.savedrequest.NullRequestCache;
 import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
-import org.springframework.security.oauth2.client.registration.ClientRegistrations;
-import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
 
-import jakarta.servlet.http.HttpSession;
+import stirling.software.SPDF.config.security.oauth2.CustomOAuth2AuthenticationFailureHandler;
+import stirling.software.SPDF.config.security.oauth2.CustomOAuth2AuthenticationSuccessHandler;
+import stirling.software.SPDF.config.security.oauth2.CustomOAuth2LogoutSuccessHandler;
+import stirling.software.SPDF.config.security.oauth2.CustomOAuth2UserService;
 import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.model.ApplicationProperties.GithubProvider;
+import stirling.software.SPDF.model.ApplicationProperties.GoogleProvider;
+import stirling.software.SPDF.model.ApplicationProperties.KeycloakProvider;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2.Client;
+import stirling.software.SPDF.model.User;
 import stirling.software.SPDF.repository.JPATokenRepositoryImpl;
 
-import java.io.IOException;
-
 @Configuration
 @EnableWebSecurity()
 @EnableMethodSecurity
 public class SecurityConfiguration {
 
-    @Autowired private UserDetailsService userDetailsService;
+    @Autowired private CustomUserDetailsService userDetailsService;
+
+    private static final Logger logger = LoggerFactory.getLogger(SecurityConfiguration.class);
 
     @Bean
     public PasswordEncoder passwordEncoder() {
@@ -92,7 +102,8 @@ public class SecurityConfiguration {
                                     formLogin
                                             .loginPage("/login")
                                             .successHandler(
-                                                    new CustomAuthenticationSuccessHandler())
+                                                    new CustomAuthenticationSuccessHandler(
+                                                            loginAttemptService))
                                             .defaultSuccessUrl("/")
                                             .failureHandler(
                                                     new CustomAuthenticationFailureHandler(
@@ -103,20 +114,9 @@ public class SecurityConfiguration {
                             logout ->
                                     logout.logoutRequestMatcher(
                                                     new AntPathRequestMatcher("/logout"))
-                                            .logoutSuccessHandler(new CustomLogoutSuccessHandler()) // Use a Custom Logout Handler to handle custom error message if OAUTH2 Auto Create is disabled
+                                            .logoutSuccessHandler(new CustomLogoutSuccessHandler())
                                             .invalidateHttpSession(true) // Invalidate session
-                                            .deleteCookies("JSESSIONID", "remember-me")
-                                            .addLogoutHandler(
-                                                    (request, response, authentication) -> {
-                                                        HttpSession session =
-                                                                request.getSession(false);
-                                                        if (session != null) {
-                                                            String sessionId = session.getId();
-                                                            sessionRegistry()
-                                                                    .removeSessionInformation(
-                                                                            sessionId);
-                                                        }
-                                                    }))
+                                            .deleteCookies("JSESSIONID", "remember-me"))
                     .rememberMe(
                             rememberMeConfigurer ->
                                     rememberMeConfigurer // Use the configurator directly
@@ -148,6 +148,7 @@ public class SecurityConfiguration {
                                                                 || trimmedUri.startsWith("/images/")
                                                                 || trimmedUri.startsWith("/public/")
                                                                 || trimmedUri.startsWith("/css/")
+                                                                || trimmedUri.startsWith("/fonts/")
                                                                 || trimmedUri.startsWith("/js/")
                                                                 || trimmedUri.startsWith(
                                                                         "/api/v1/info/status");
@@ -155,35 +156,46 @@ public class SecurityConfiguration {
                                             .permitAll()
                                             .anyRequest()
                                             .authenticated())
-                    .userDetailsService(userDetailsService)
                     .authenticationProvider(authenticationProvider());
 
             // Handle OAUTH2 Logins
-            if (applicationProperties.getSecurity().getOAUTH2().getEnabled()) {
+            if (applicationProperties.getSecurity().getOAUTH2() != null
+                    && applicationProperties.getSecurity().getOAUTH2().getEnabled()) {
 
-                 http.oauth2Login( oauth2 -> oauth2
-                         .loginPage("/oauth2")
-                         /*
-                         This Custom handler is used to check if the OAUTH2 user trying to log in, already exists in the database.
-                         If user exists, login proceeds as usual. If user does not exist, then it is autocreated but only if 'OAUTH2AutoCreateUser'
-                         is set as true, else login fails with an error message advising the same.
-                          */
-                         .successHandler(new AuthenticationSuccessHandler() {
-                                @Override
-                                public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
-                                        Authentication authentication) throws ServletException , IOException{
-                                    OAuth2User oauthUser =  (OAuth2User) authentication.getPrincipal();
-                                    if (userService.processOAuth2PostLogin(oauthUser.getAttribute("email"), applicationProperties.getSecurity().getOAUTH2().getAutoCreateUser())) {
-                                        response.sendRedirect("/");
-                                    }
-                                    else{
-                                        response.sendRedirect("/logout?oauth2AutoCreateDisabled=true");
-                                    }
-                                }
-                            }
-                         )
-                 );
-             }
+                http.oauth2Login(
+                                oauth2 ->
+                                        oauth2.loginPage("/oauth2")
+                                                /*
+                                                This Custom handler is used to check if the OAUTH2 user trying to log in, already exists in the database.
+                                                If user exists, login proceeds as usual. If user does not exist, then it is autocreated but only if 'OAUTH2AutoCreateUser'
+                                                is set as true, else login fails with an error message advising the same.
+                                                 */
+                                                .successHandler(
+                                                        new CustomOAuth2AuthenticationSuccessHandler(
+                                                                loginAttemptService,
+                                                                applicationProperties,
+                                                                userService))
+                                                .failureHandler(
+                                                        new CustomOAuth2AuthenticationFailureHandler())
+                                                // Add existing Authorities from the database
+                                                .userInfoEndpoint(
+                                                        userInfoEndpoint ->
+                                                                userInfoEndpoint
+                                                                        .oidcUserService(
+                                                                                new CustomOAuth2UserService(
+                                                                                        applicationProperties,
+                                                                                        userService,
+                                                                                        loginAttemptService))
+                                                                        .userAuthoritiesMapper(
+                                                                                userAuthoritiesMapper())))
+                        .logout(
+                                logout ->
+                                        logout.logoutSuccessHandler(
+                                                        new CustomOAuth2LogoutSuccessHandler(
+                                                                this.applicationProperties,
+                                                                sessionRegistry()))
+                                                .invalidateHttpSession(true));
+            }
         } else {
             http.csrf(csrf -> csrf.disable())
                     .authorizeHttpRequests(authz -> authz.anyRequest().permitAll());
@@ -194,21 +206,175 @@ public class SecurityConfiguration {
 
     // Client Registration Repository for OAUTH2 OIDC Login
     @Bean
-    @ConditionalOnProperty(value = "security.oauth2.enabled" , havingValue = "true", matchIfMissing = false)
-	public ClientRegistrationRepository clientRegistrationRepository() {
-		return new InMemoryClientRegistrationRepository(this.oidcClientRegistration());
-	}
+    @ConditionalOnProperty(
+            value = "security.oauth2.enabled",
+            havingValue = "true",
+            matchIfMissing = false)
+    public ClientRegistrationRepository clientRegistrationRepository() {
+        List<ClientRegistration> registrations = new ArrayList<>();
 
-	private ClientRegistration oidcClientRegistration() {
-		return ClientRegistrations.fromOidcIssuerLocation(applicationProperties.getSecurity().getOAUTH2().getIssuer())
-			.registrationId("oidc")
-            .clientId(applicationProperties.getSecurity().getOAUTH2().getClientId())
-			.clientSecret(applicationProperties.getSecurity().getOAUTH2().getClientSecret())
-			.scope("openid", "profile", "email")
-			.userNameAttributeName("email")
-			.clientName("OIDC")
-			.build();
-	}
+        githubClientRegistration().ifPresent(registrations::add);
+        oidcClientRegistration().ifPresent(registrations::add);
+        googleClientRegistration().ifPresent(registrations::add);
+        keycloakClientRegistration().ifPresent(registrations::add);
+
+        if (registrations.isEmpty()) {
+            logger.error("At least one OAuth2 provider must be configured");
+            System.exit(1);
+        }
+
+        return new InMemoryClientRegistrationRepository(registrations);
+    }
+
+    private Optional<ClientRegistration> googleClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null || !oauth.getEnabled()) {
+            return Optional.empty();
+        }
+        Client client = oauth.getClient();
+        if (client == null) {
+            return Optional.empty();
+        }
+        GoogleProvider google = client.getGoogle();
+        return google != null && google.isSettingsValid()
+                ? Optional.of(
+                        ClientRegistration.withRegistrationId(google.getName())
+                                .clientId(google.getClientId())
+                                .clientSecret(google.getClientSecret())
+                                .scope(google.getScopes())
+                                .authorizationUri(google.getAuthorizationuri())
+                                .tokenUri(google.getTokenuri())
+                                .userInfoUri(google.getUserinfouri())
+                                .userNameAttributeName(google.getUseAsUsername())
+                                .clientName(google.getClientName())
+                                .redirectUri("{baseUrl}/login/oauth2/code/" + google.getName())
+                                .authorizationGrantType(
+                                        org.springframework.security.oauth2.core
+                                                .AuthorizationGrantType.AUTHORIZATION_CODE)
+                                .build())
+                : Optional.empty();
+    }
+
+    private Optional<ClientRegistration> keycloakClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null || !oauth.getEnabled()) {
+            return Optional.empty();
+        }
+        Client client = oauth.getClient();
+        if (client == null) {
+            return Optional.empty();
+        }
+        KeycloakProvider keycloak = client.getKeycloak();
+
+        return keycloak != null && keycloak.isSettingsValid()
+                ? Optional.of(
+                        ClientRegistrations.fromIssuerLocation(keycloak.getIssuer())
+                                .registrationId(keycloak.getName())
+                                .clientId(keycloak.getClientId())
+                                .clientSecret(keycloak.getClientSecret())
+                                .scope(keycloak.getScopes())
+                                .userNameAttributeName(keycloak.getUseAsUsername())
+                                .clientName(keycloak.getClientName())
+                                .build())
+                : Optional.empty();
+    }
+
+    private Optional<ClientRegistration> githubClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null || !oauth.getEnabled()) {
+            return Optional.empty();
+        }
+        Client client = oauth.getClient();
+        if (client == null) {
+            return Optional.empty();
+        }
+        GithubProvider github = client.getGithub();
+        return github != null && github.isSettingsValid()
+                ? Optional.of(
+                        ClientRegistration.withRegistrationId(github.getName())
+                                .clientId(github.getClientId())
+                                .clientSecret(github.getClientSecret())
+                                .scope(github.getScopes())
+                                .authorizationUri(github.getAuthorizationuri())
+                                .tokenUri(github.getTokenuri())
+                                .userInfoUri(github.getUserinfouri())
+                                .userNameAttributeName(github.getUseAsUsername())
+                                .clientName(github.getClientName())
+                                .redirectUri("{baseUrl}/login/oauth2/code/" + github.getName())
+                                .authorizationGrantType(
+                                        org.springframework.security.oauth2.core
+                                                .AuthorizationGrantType.AUTHORIZATION_CODE)
+                                .build())
+                : Optional.empty();
+    }
+
+    private Optional<ClientRegistration> oidcClientRegistration() {
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+        if (oauth == null
+                || oauth.getIssuer() == null
+                || oauth.getIssuer().isEmpty()
+                || oauth.getClientId() == null
+                || oauth.getClientId().isEmpty()
+                || oauth.getClientSecret() == null
+                || oauth.getClientSecret().isEmpty()
+                || oauth.getScopes() == null
+                || oauth.getScopes().isEmpty()
+                || oauth.getUseAsUsername() == null
+                || oauth.getUseAsUsername().isEmpty()) {
+            return Optional.empty();
+        }
+        return Optional.of(
+                ClientRegistrations.fromIssuerLocation(oauth.getIssuer())
+                        .registrationId("oidc")
+                        .clientId(oauth.getClientId())
+                        .clientSecret(oauth.getClientSecret())
+                        .scope(oauth.getScopes())
+                        .userNameAttributeName(oauth.getUseAsUsername())
+                        .clientName("OIDC")
+                        .build());
+    }
+
+    /*
+    This following function is to grant Authorities to the OAUTH2 user from the values stored in the database.
+    This is required for the internal; 'hasRole()' function to give out the correct role.
+     */
+    @Bean
+    @ConditionalOnProperty(
+            value = "security.oauth2.enabled",
+            havingValue = "true",
+            matchIfMissing = false)
+    GrantedAuthoritiesMapper userAuthoritiesMapper() {
+        return (authorities) -> {
+            Set<GrantedAuthority> mappedAuthorities = new HashSet<>();
+
+            authorities.forEach(
+                    authority -> {
+                        // Add existing OAUTH2 Authorities
+                        mappedAuthorities.add(new SimpleGrantedAuthority(authority.getAuthority()));
+
+                        // Add Authorities from database for existing user, if user is present.
+                        if (authority instanceof OAuth2UserAuthority oauth2Auth) {
+                            String useAsUsername =
+                                    applicationProperties
+                                            .getSecurity()
+                                            .getOAUTH2()
+                                            .getUseAsUsername();
+                            Optional<User> userOpt =
+                                    userService.findByUsernameIgnoreCase(
+                                            (String) oauth2Auth.getAttributes().get(useAsUsername));
+                            if (userOpt.isPresent()) {
+                                User user = userOpt.get();
+                                if (user != null) {
+                                    mappedAuthorities.add(
+                                            new SimpleGrantedAuthority(
+                                                    userService.findRole(user).getAuthority()));
+                                }
+                            }
+                        }
+                    });
+            return mappedAuthorities;
+        };
+    }
 
     @Bean
     public IPRateLimitingFilter rateLimitingFilter() {

src/main/java/stirling/software/SPDF/config/security/UserAuthenticationFilter.java

@@ -101,6 +101,7 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
             contextPath + "/images/",
             contextPath + "/public/",
             contextPath + "/css/",
+            contextPath + "/fonts/",
             contextPath + "/js/",
             contextPath + "/pdfjs/",
             contextPath + "/api/v1/info/status",

src/main/java/stirling/software/SPDF/config/security/UserBasedRateLimitingFilter.java

@@ -20,6 +20,7 @@ import io.github.bucket4j.Bandwidth;
 import io.github.bucket4j.Bucket;
 import io.github.bucket4j.ConsumptionProbe;
 import io.github.bucket4j.Refill;
+import io.github.pixee.security.Newlines;
 
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
@@ -125,12 +126,16 @@ public class UserBasedRateLimitingFilter extends OncePerRequestFilter {
         ConsumptionProbe probe = userBucket.tryConsumeAndReturnRemaining(1);
 
         if (probe.isConsumed()) {
-            response.setHeader("X-Rate-Limit-Remaining", Long.toString(probe.getRemainingTokens()));
+            response.setHeader(
+                    "X-Rate-Limit-Remaining",
+                    Newlines.stripAll(Long.toString(probe.getRemainingTokens())));
             filterChain.doFilter(request, response);
         } else {
             long waitForRefill = probe.getNanosToWaitForRefill() / 1_000_000_000;
             response.setStatus(HttpStatus.TOO_MANY_REQUESTS.value());
-            response.setHeader("X-Rate-Limit-Retry-After-Seconds", String.valueOf(waitForRefill));
+            response.setHeader(
+                    "X-Rate-Limit-Retry-After-Seconds",
+                    Newlines.stripAll(String.valueOf(waitForRefill)));
             response.getWriter().write("Rate limit exceeded for POST requests.");
         }
     }

src/main/java/stirling/software/SPDF/config/security/UserService.java

@@ -8,6 +8,8 @@ import java.util.UUID;
 import java.util.stream.Collectors;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.MessageSource;
+import org.springframework.context.i18n.LocaleContextHolder;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.GrantedAuthority;
@@ -18,9 +20,11 @@ import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 
 import stirling.software.SPDF.controller.api.pipeline.UserServiceInterface;
+import stirling.software.SPDF.model.AuthenticationType;
 import stirling.software.SPDF.model.Authority;
 import stirling.software.SPDF.model.Role;
 import stirling.software.SPDF.model.User;
+import stirling.software.SPDF.repository.AuthorityRepository;
 import stirling.software.SPDF.repository.UserRepository;
 
 @Service
@@ -28,21 +32,23 @@ public class UserService implements UserServiceInterface {
 
     @Autowired private UserRepository userRepository;
 
+    @Autowired private AuthorityRepository authorityRepository;
+
     @Autowired private PasswordEncoder passwordEncoder;
 
+    @Autowired private MessageSource messageSource;
+
     // Handle OAUTH2 login and user auto creation.
     public boolean processOAuth2PostLogin(String username, boolean autoCreateUser) {
-        Optional<User> existUser = userRepository.findByUsernameIgnoreCase(username);
-        if (existUser.isPresent()) {
+        if (!isUsernameValid(username)) {
+            return false;
+        }
+        Optional<User> existingUser = userRepository.findByUsernameIgnoreCase(username);
+        if (existingUser.isPresent()) {
             return true;
         }
         if (autoCreateUser) {
-            User user = new User();
-            user.setUsername(username);
-            user.setEnabled(true);
-            user.setFirstLogin(false);
-            user.addAuthority(new Authority( Role.USER.getRoleId(), user));
-            userRepository.save(user);
+            saveUser(username, AuthenticationType.OAUTH2);
             return true;
         }
         return false;
@@ -108,9 +114,8 @@ public class UserService implements UserServiceInterface {
     }
 
     public UserDetails loadUserByApiKey(String apiKey) {
-        User userOptional = userRepository.findByApiKey(apiKey);
-        if (userOptional != null) {
-            User user = userOptional;
+        User user = userRepository.findByApiKey(apiKey);
+        if (user != null) {
             // Convert your User entity to a UserDetails object with authorities
             return new org.springframework.security.core.userdetails.User(
                     user.getUsername(),
@@ -122,35 +127,53 @@ public class UserService implements UserServiceInterface {
 
     public boolean validateApiKeyForUser(String username, String apiKey) {
         Optional<User> userOpt = userRepository.findByUsernameIgnoreCase(username);
-        return userOpt.isPresent() && userOpt.get().getApiKey().equals(apiKey);
+        return userOpt.isPresent() && apiKey.equals(userOpt.get().getApiKey());
     }
 
-    public void saveUser(String username, String password) {
+    public void saveUser(String username, AuthenticationType authenticationType)
+            throws IllegalArgumentException {
+        if (!isUsernameValid(username)) {
+            throw new IllegalArgumentException(getInvalidUsernameMessage());
+        }
+        User user = new User();
+        user.setUsername(username);
+        user.setEnabled(true);
+        user.setFirstLogin(false);
+        user.addAuthority(new Authority(Role.USER.getRoleId(), user));
+        user.setAuthenticationType(authenticationType);
+        userRepository.save(user);
+    }
+
+    public void saveUser(String username, String password) throws IllegalArgumentException {
+        if (!isUsernameValid(username)) {
+            throw new IllegalArgumentException(getInvalidUsernameMessage());
+        }
         User user = new User();
         user.setUsername(username);
         user.setPassword(passwordEncoder.encode(password));
         user.setEnabled(true);
+        user.setAuthenticationType(AuthenticationType.WEB);
         userRepository.save(user);
     }
 
-    public void saveUser(String username, String password, String role, boolean firstLogin) {
+    public void saveUser(String username, String password, String role, boolean firstLogin)
+            throws IllegalArgumentException {
+        if (!isUsernameValid(username)) {
+            throw new IllegalArgumentException(getInvalidUsernameMessage());
+        }
         User user = new User();
         user.setUsername(username);
         user.setPassword(passwordEncoder.encode(password));
         user.addAuthority(new Authority(role, user));
         user.setEnabled(true);
+        user.setAuthenticationType(AuthenticationType.WEB);
         user.setFirstLogin(firstLogin);
         userRepository.save(user);
     }
 
-    public void saveUser(String username, String password, String role) {
-        User user = new User();
-        user.setUsername(username);
-        user.setPassword(passwordEncoder.encode(password));
-        user.addAuthority(new Authority(role, user));
-        user.setEnabled(true);
-        user.setFirstLogin(false);
-        userRepository.save(user);
+    public void saveUser(String username, String password, String role)
+            throws IllegalArgumentException {
+        saveUser(username, password, role, false);
     }
 
     public void deleteUser(String username) {
@@ -174,7 +197,13 @@ public class UserService implements UserServiceInterface {
     }
 
     public boolean hasUsers() {
-        return userRepository.count() > 0;
+        long userCount = userRepository.count();
+        if (userRepository
+                .findByUsernameIgnoreCase(Role.INTERNAL_API_USER.getRoleId())
+                .isPresent()) {
+            userCount -= 1;
+        }
+        return userCount > 0;
     }
 
     public void updateUserSettings(String username, Map<String, String> updates) {
@@ -184,7 +213,7 @@ public class UserService implements UserServiceInterface {
             Map<String, String> settingsMap = user.getSettings();
 
             if (settingsMap == null) {
-                settingsMap = new HashMap<String, String>();
+                settingsMap = new HashMap<>();
             }
             settingsMap.clear();
             settingsMap.putAll(updates);
@@ -202,7 +231,14 @@ public class UserService implements UserServiceInterface {
         return userRepository.findByUsernameIgnoreCase(username);
     }
 
-    public void changeUsername(User user, String newUsername) {
+    public Authority findRole(User user) {
+        return authorityRepository.findByUserId(user.getId());
+    }
+
+    public void changeUsername(User user, String newUsername) throws IllegalArgumentException {
+        if (!isUsernameValid(newUsername)) {
+            throw new IllegalArgumentException(getInvalidUsernameMessage());
+        }
         user.setUsername(newUsername);
         userRepository.save(user);
     }
@@ -217,11 +253,41 @@ public class UserService implements UserServiceInterface {
         userRepository.save(user);
     }
 
+    public void changeRole(User user, String newRole) {
+        Authority userAuthority = this.findRole(user);
+        userAuthority.setAuthority(newRole);
+        authorityRepository.save(userAuthority);
+    }
+
     public boolean isPasswordCorrect(User user, String currentPassword) {
         return passwordEncoder.matches(currentPassword, user.getPassword());
     }
 
     public boolean isUsernameValid(String username) {
-        return username.matches("[a-zA-Z0-9]+");
+        // Checks whether the simple username is formatted correctly
+        boolean isValidSimpleUsername =
+                username.matches("^[a-zA-Z0-9][a-zA-Z0-9@._+-]*[a-zA-Z0-9]$");
+        // Checks whether the email address is formatted correctly
+        boolean isValidEmail =
+                username.matches(
+                        "^(?=.{1,64}@)[A-Za-z0-9]+(\\.[A-Za-z0-9_+.-]+)*@[^-][A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[A-Za-z]{2,})$");
+        return isValidSimpleUsername || isValidEmail;
+    }
+
+    private String getInvalidUsernameMessage() {
+        return messageSource.getMessage(
+                "invalidUsernameMessage", null, LocaleContextHolder.getLocale());
+    }
+
+    public boolean hasPassword(String username) {
+        Optional<User> user = userRepository.findByUsernameIgnoreCase(username);
+        return user.isPresent() && user.get().hasPassword();
+    }
+
+    public boolean isAuthenticationTypeByUsername(
+            String username, AuthenticationType authenticationType) {
+        Optional<User> user = userRepository.findByUsernameIgnoreCase(username);
+        return user.isPresent()
+                && authenticationType.name().equalsIgnoreCase(user.get().getAuthenticationType());
     }
 }

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2AuthenticationFailureHandler.java

@@ -0,0 +1,50 @@
+package stirling.software.SPDF.config.security.oauth2;
+
+import java.io.IOException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.authentication.LockedException;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
+import org.springframework.security.oauth2.core.OAuth2Error;
+import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+public class CustomOAuth2AuthenticationFailureHandler
+        extends SimpleUrlAuthenticationFailureHandler {
+
+    private static final Logger logger =
+            LoggerFactory.getLogger(CustomOAuth2AuthenticationFailureHandler.class);
+
+    @Override
+    public void onAuthenticationFailure(
+            HttpServletRequest request,
+            HttpServletResponse response,
+            AuthenticationException exception)
+            throws IOException, ServletException {
+        if (exception instanceof OAuth2AuthenticationException) {
+            OAuth2Error error = ((OAuth2AuthenticationException) exception).getError();
+
+            String errorCode = error.getErrorCode();
+
+            if (error.getErrorCode().equals("Password must not be null")) {
+                errorCode = "userAlreadyExistsWeb";
+            }
+            logger.error("OAuth2 Authentication error: " + errorCode);
+            getRedirectStrategy()
+                    .sendRedirect(request, response, "/logout?erroroauth=" + errorCode);
+            return;
+        } else if (exception instanceof LockedException) {
+            logger.error("Account locked: ", exception);
+            getRedirectStrategy().sendRedirect(request, response, "/logout?error=locked");
+            return;
+        } else {
+            logger.error("Unhandled authentication exception", exception);
+            super.onAuthenticationFailure(request, response, exception);
+        }
+    }
+}

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2AuthenticationSuccessHandler.java

@@ -0,0 +1,93 @@
+package stirling.software.SPDF.config.security.oauth2;
+
+import java.io.IOException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.authentication.LockedException;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.oauth2.core.user.OAuth2User;
+import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
+import org.springframework.security.web.savedrequest.SavedRequest;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+import stirling.software.SPDF.config.security.LoginAttemptService;
+import stirling.software.SPDF.config.security.UserService;
+import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.AuthenticationType;
+import stirling.software.SPDF.utils.RequestUriUtils;
+
+public class CustomOAuth2AuthenticationSuccessHandler
+        extends SavedRequestAwareAuthenticationSuccessHandler {
+
+    private LoginAttemptService loginAttemptService;
+
+    private static final Logger logger =
+            LoggerFactory.getLogger(CustomOAuth2AuthenticationSuccessHandler.class);
+
+    private ApplicationProperties applicationProperties;
+    private UserService userService;
+
+    public CustomOAuth2AuthenticationSuccessHandler(
+            final LoginAttemptService loginAttemptService,
+            ApplicationProperties applicationProperties,
+            UserService userService) {
+        this.applicationProperties = applicationProperties;
+        this.userService = userService;
+        this.loginAttemptService = loginAttemptService;
+    }
+
+    @Override
+    public void onAuthenticationSuccess(
+            HttpServletRequest request, HttpServletResponse response, Authentication authentication)
+            throws ServletException, IOException {
+
+        // Get the saved request
+        HttpSession session = request.getSession(false);
+        SavedRequest savedRequest =
+                (session != null)
+                        ? (SavedRequest) session.getAttribute("SPRING_SECURITY_SAVED_REQUEST")
+                        : null;
+
+        if (savedRequest != null
+                && !RequestUriUtils.isStaticResource(savedRequest.getRedirectUrl())) {
+            // Redirect to the original destination
+            super.onAuthenticationSuccess(request, response, authentication);
+        } else {
+            OAuth2User oauthUser = (OAuth2User) authentication.getPrincipal();
+            OAUTH2 oAuth = applicationProperties.getSecurity().getOAUTH2();
+
+            String username = oauthUser.getName();
+
+            if (loginAttemptService.isBlocked(username)) {
+                if (session != null) {
+                    session.removeAttribute("SPRING_SECURITY_SAVED_REQUEST");
+                }
+                throw new LockedException(
+                        "Your account has been locked due to too many failed login attempts.");
+            }
+            if (userService.usernameExistsIgnoreCase(username)
+                    && userService.hasPassword(username)
+                    && !userService.isAuthenticationTypeByUsername(
+                            username, AuthenticationType.OAUTH2)
+                    && oAuth.getAutoCreateUser()) {
+                response.sendRedirect(
+                        request.getContextPath() + "/logout?oauth2AuthenticationErrorWeb=true");
+                return;
+            } else {
+                try {
+                    userService.processOAuth2PostLogin(username, oAuth.getAutoCreateUser());
+                    response.sendRedirect("/");
+                    return;
+                } catch (IllegalArgumentException e) {
+                    response.sendRedirect("/logout?invalidUsername=true");
+                    return;
+                }
+            }
+        }
+    }
+}

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2LogoutSuccessHandler.java

@@ -0,0 +1,122 @@
+package stirling.software.SPDF.config.security.oauth2;
+
+import java.io.IOException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.session.SessionRegistry;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
+import org.springframework.security.web.authentication.logout.SimpleUrlLogoutSuccessHandler;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.servlet.http.HttpSession;
+import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.Provider;
+import stirling.software.SPDF.utils.UrlUtils;
+
+public class CustomOAuth2LogoutSuccessHandler extends SimpleUrlLogoutSuccessHandler {
+
+    private static final Logger logger =
+            LoggerFactory.getLogger(CustomOAuth2LogoutSuccessHandler.class);
+
+    private final SessionRegistry sessionRegistry;
+    private final ApplicationProperties applicationProperties;
+
+    public CustomOAuth2LogoutSuccessHandler(
+            ApplicationProperties applicationProperties, SessionRegistry sessionRegistry) {
+        this.sessionRegistry = sessionRegistry;
+        this.applicationProperties = applicationProperties;
+    }
+
+    @Override
+    public void onLogoutSuccess(
+            HttpServletRequest request, HttpServletResponse response, Authentication authentication)
+            throws IOException, ServletException {
+        String param = "logout=true";
+        String registrationId = null;
+        String issuer = null;
+        String clientId = null;
+
+        OAUTH2 oauth = applicationProperties.getSecurity().getOAUTH2();
+
+        if (authentication instanceof OAuth2AuthenticationToken) {
+            OAuth2AuthenticationToken oauthToken = (OAuth2AuthenticationToken) authentication;
+            registrationId = oauthToken.getAuthorizedClientRegistrationId();
+
+            try {
+                Provider provider = oauth.getClient().get(registrationId);
+                issuer = provider.getIssuer();
+                clientId = provider.getClientId();
+            } catch (Exception e) {
+                logger.error("exception", e);
+            }
+
+        } else {
+            registrationId = oauth.getProvider() != null ? oauth.getProvider() : "";
+            issuer = oauth.getIssuer();
+            clientId = oauth.getClientId();
+        }
+        String errorMessage = "";
+        if (request.getParameter("oauth2AuthenticationErrorWeb") != null) {
+            param = "erroroauth=oauth2AuthenticationErrorWeb";
+        } else if ((errorMessage = request.getParameter("error")) != null) {
+            param = "error=" + sanitizeInput(errorMessage);
+        } else if ((errorMessage = request.getParameter("erroroauth")) != null) {
+            param = "erroroauth=" + sanitizeInput(errorMessage);
+        } else if (request.getParameter("oauth2AutoCreateDisabled") != null) {
+            param = "error=oauth2AutoCreateDisabled";
+        }
+
+        String redirect_url = UrlUtils.getOrigin(request) + "/login?" + param;
+
+        HttpSession session = request.getSession(false);
+        if (session != null) {
+            String sessionId = session.getId();
+            sessionRegistry.removeSessionInformation(sessionId);
+            session.invalidate();
+            logger.info("Session invalidated: " + sessionId);
+        }
+
+        switch (registrationId.toLowerCase()) {
+            case "keycloak":
+                // Add Keycloak specific logout URL if needed
+                String logoutUrl =
+                        issuer
+                                + "/protocol/openid-connect/logout"
+                                + "?client_id="
+                                + clientId
+                                + "&post_logout_redirect_uri="
+                                + response.encodeRedirectURL(redirect_url);
+                logger.info("Redirecting to Keycloak logout URL: " + logoutUrl);
+                response.sendRedirect(logoutUrl);
+                break;
+            case "github":
+                // Add GitHub specific logout URL if needed
+                String githubLogoutUrl = "https://github.com/logout";
+                logger.info("Redirecting to GitHub logout URL: " + githubLogoutUrl);
+                response.sendRedirect(githubLogoutUrl);
+                break;
+            case "google":
+                // Add Google specific logout URL if needed
+                // String googleLogoutUrl =
+                // "https://accounts.google.com/Logout?continue=https://appengine.google.com/_ah/logout?continue="
+                //                 + response.encodeRedirectURL(redirect_url);
+                // logger.info("Redirecting to Google logout URL: " + googleLogoutUrl);
+                // response.sendRedirect(googleLogoutUrl);
+                // break;
+            default:
+                String redirectUrl = request.getContextPath() + "/login?" + param;
+                logger.info("Redirecting to default logout URL: " + redirectUrl);
+                response.sendRedirect(redirectUrl);
+                break;
+        }
+    }
+
+    private String sanitizeInput(String input) {
+        return input.replaceAll("[^a-zA-Z0-9 ]", "");
+    }
+}

src/main/java/stirling/software/SPDF/config/security/oauth2/CustomOAuth2UserService.java

@@ -0,0 +1,92 @@
+package stirling.software.SPDF.config.security.oauth2;
+
+import java.util.Optional;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.authentication.LockedException;
+import org.springframework.security.oauth2.client.oidc.userinfo.OidcUserRequest;
+import org.springframework.security.oauth2.client.oidc.userinfo.OidcUserService;
+import org.springframework.security.oauth2.client.userinfo.OAuth2UserService;
+import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
+import org.springframework.security.oauth2.core.OAuth2Error;
+import org.springframework.security.oauth2.core.oidc.user.DefaultOidcUser;
+import org.springframework.security.oauth2.core.oidc.user.OidcUser;
+
+import stirling.software.SPDF.config.security.LoginAttemptService;
+import stirling.software.SPDF.config.security.UserService;
+import stirling.software.SPDF.model.ApplicationProperties;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2;
+import stirling.software.SPDF.model.ApplicationProperties.Security.OAUTH2.Client;
+import stirling.software.SPDF.model.User;
+
+public class CustomOAuth2UserService implements OAuth2UserService<OidcUserRequest, OidcUser> {
+
+    private final OidcUserService delegate = new OidcUserService();
+
+    private UserService userService;
+
+    private LoginAttemptService loginAttemptService;
+
+    private ApplicationProperties applicationProperties;
+
+    private static final Logger logger = LoggerFactory.getLogger(CustomOAuth2UserService.class);
+
+    public CustomOAuth2UserService(
+            ApplicationProperties applicationProperties,
+            UserService userService,
+            LoginAttemptService loginAttemptService) {
+        this.applicationProperties = applicationProperties;
+        this.userService = userService;
+        this.loginAttemptService = loginAttemptService;
+    }
+
+    @Override
+    public OidcUser loadUser(OidcUserRequest userRequest) throws OAuth2AuthenticationException {
+        OAUTH2 oauth2 = applicationProperties.getSecurity().getOAUTH2();
+        String usernameAttribute = oauth2.getUseAsUsername();
+        if (usernameAttribute == null || usernameAttribute.trim().isEmpty()) {
+            Client client = oauth2.getClient();
+            if (client != null && client.getKeycloak() != null) {
+                usernameAttribute = client.getKeycloak().getUseAsUsername();
+            } else {
+                usernameAttribute = "email";
+            }
+        }
+
+        try {
+            OidcUser user = delegate.loadUser(userRequest);
+            String username = user.getUserInfo().getClaimAsString(usernameAttribute);
+
+            // Check if the username claim is null or empty
+            if (username == null || username.trim().isEmpty()) {
+                throw new IllegalArgumentException(
+                        "Claim '" + usernameAttribute + "' cannot be null or empty");
+            }
+
+            Optional<User> duser = userService.findByUsernameIgnoreCase(username);
+            if (duser.isPresent()) {
+                if (loginAttemptService.isBlocked(username)) {
+                    throw new LockedException(
+                            "Your account has been locked due to too many failed login attempts.");
+                }
+                if (userService.hasPassword(username)) {
+                    throw new IllegalArgumentException("Password must not be null");
+                }
+            }
+
+            // Return a new OidcUser with adjusted attributes
+            return new DefaultOidcUser(
+                    user.getAuthorities(),
+                    userRequest.getIdToken(),
+                    user.getUserInfo(),
+                    usernameAttribute);
+        } catch (IllegalArgumentException e) {
+            logger.error("Error loading OIDC user: {}", e.getMessage());
+            throw new OAuth2AuthenticationException(new OAuth2Error(e.getMessage()), e);
+        } catch (Exception e) {
+            logger.error("Unexpected error loading OIDC user", e);
+            throw new OAuth2AuthenticationException("Unexpected error during authentication");
+        }
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/MergeController.java

@@ -10,11 +10,16 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.PDFMergerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
 import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
@@ -38,6 +43,7 @@ public class MergeController {
 
     private static final Logger logger = LoggerFactory.getLogger(MergeController.class);
 
+    // Merges a list of PDDocument objects into a single PDDocument
     public PDDocument mergeDocuments(List<PDDocument> documents) throws IOException {
         PDDocument mergedDoc = new PDDocument();
         for (PDDocument doc : documents) {
@@ -48,6 +54,7 @@ public class MergeController {
         return mergedDoc;
     }
 
+    // Returns a comparator for sorting MultipartFile arrays based on the given sort type
     private Comparator<MultipartFile> getSortComparator(String sortType) {
         switch (sortType) {
             case "byFileName":
@@ -108,34 +115,77 @@ public class MergeController {
                     "This endpoint merges multiple PDF files into a single PDF file. The merged file will contain all pages from the input files in the order they were provided. Input:PDF Output:PDF Type:MISO")
     public ResponseEntity<byte[]> mergePdfs(@ModelAttribute MergePdfsRequest form)
             throws IOException {
-        List<File> filesToDelete = new ArrayList<File>();
+        List<File> filesToDelete = new ArrayList<>(); // List of temporary files to delete
+        ByteArrayOutputStream docOutputstream =
+                new ByteArrayOutputStream(); // Stream for the merged document
+        PDDocument mergedDocument = null;
+
+        boolean removeCertSign = form.isRemoveCertSign();
+
         try {
             MultipartFile[] files = form.getFileInput();
-            Arrays.sort(files, getSortComparator(form.getSortType()));
-
-            PDFMergerUtility mergedDoc = new PDFMergerUtility();
-            ByteArrayOutputStream docOutputstream = new ByteArrayOutputStream();
+            Arrays.sort(
+                    files,
+                    getSortComparator(
+                            form.getSortType())); // Sort files based on the given sort type
 
+            PDFMergerUtility mergerUtility = new PDFMergerUtility();
             for (MultipartFile multipartFile : files) {
-                File tempFile = GeneralUtils.convertMultipartFileToFile(multipartFile);
-                filesToDelete.add(tempFile);
-                mergedDoc.addSource(tempFile);
+                File tempFile =
+                        GeneralUtils.convertMultipartFileToFile(
+                                multipartFile); // Convert MultipartFile to File
+                filesToDelete.add(tempFile); // Add temp file to the list for later deletion
+                mergerUtility.addSource(tempFile); // Add source file to the merger utility
+            }
+            mergerUtility.setDestinationStream(
+                    docOutputstream); // Set the output stream for the merged document
+            mergerUtility.mergeDocuments(null); // Merge the documents
+
+            byte[] mergedPdfBytes = docOutputstream.toByteArray(); // Get merged document bytes
+
+            // Load the merged PDF document
+            mergedDocument = Loader.loadPDF(mergedPdfBytes);
+
+            // Remove signatures if removeCertSign is true
+            if (removeCertSign) {
+                PDDocumentCatalog catalog = mergedDocument.getDocumentCatalog();
+                PDAcroForm acroForm = catalog.getAcroForm();
+                if (acroForm != null) {
+                    List<PDField> fieldsToRemove =
+                            acroForm.getFields().stream()
+                                    .filter(field -> field instanceof PDSignatureField)
+                                    .collect(Collectors.toList());
+
+                    if (!fieldsToRemove.isEmpty()) {
+                        acroForm.flatten(
+                                fieldsToRemove,
+                                false); // Flatten the fields, effectively removing them
+                    }
+                }
             }
 
-            mergedDoc.setDestinationFileName(
-                    files[0].getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_merged.pdf");
-            mergedDoc.setDestinationStream(docOutputstream);
-
-            mergedDoc.mergeDocuments(null);
+            // Save the modified document to a new ByteArrayOutputStream
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            mergedDocument.save(baos);
 
+            String mergedFileName =
+                    files[0].getOriginalFilename().replaceFirst("[.][^.]+$", "")
+                            + "_merged_unsigned.pdf";
             return WebResponseUtils.bytesToWebResponse(
-                    docOutputstream.toByteArray(), mergedDoc.getDestinationFileName());
+                    baos.toByteArray(), mergedFileName); // Return the modified PDF
+
         } catch (Exception ex) {
             logger.error("Error in merge pdf process", ex);
             throw ex;
         } finally {
             for (File file : filesToDelete) {
-                file.delete();
+                if (file != null) {
+                    Files.deleteIfExists(file.toPath()); // Delete temporary files
+                }
+            }
+            docOutputstream.close();
+            if (mergedDocument != null) {
+                mergedDocument.close(); // Close the merged document
             }
         }
     }

src/main/java/stirling/software/SPDF/controller/api/PdfOverlayController.java

@@ -87,12 +87,12 @@ public class PdfOverlayController {
         } finally {
             for (File overlayPdfFile : overlayPdfFiles) {
                 if (overlayPdfFile != null) {
-                    overlayPdfFile.delete();
+                    Files.deleteIfExists(overlayPdfFile.toPath());
                 }
             }
             for (File tempFile : tempFiles) { // Delete temporary files
                 if (tempFile != null) {
-                    tempFile.delete();
+                    Files.deleteIfExists(tempFile.toPath());
                 }
             }
         }

src/main/java/stirling/software/SPDF/controller/api/SplitPDFController.java

@@ -121,7 +121,7 @@ public class SplitPDFController {
 
         logger.info("Successfully created zip file with split documents: {}", zipFile.toString());
         byte[] data = Files.readAllBytes(zipFile);
-        Files.delete(zipFile);
+        Files.deleteIfExists(zipFile);
 
         // return the Resource in the response
         return WebResponseUtils.bytesToWebResponse(

src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySectionsController.java

@@ -18,6 +18,8 @@ import org.apache.pdfbox.pdmodel.PDPageContentStream.AppendMode;
 import org.apache.pdfbox.pdmodel.common.PDRectangle;
 import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
 import org.apache.pdfbox.util.Matrix;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -38,6 +40,9 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "General", description = "General APIs")
 public class SplitPdfBySectionsController {
 
+    private static final Logger logger =
+            LoggerFactory.getLogger(SplitPdfBySectionsController.class);
+
     @PostMapping(value = "/split-pdf-by-sections", consumes = "multipart/form-data")
     @Operation(
             summary = "Split PDF pages into smaller sections",
@@ -63,10 +68,7 @@ public class SplitPdfBySectionsController {
             MergeController mergeController = new MergeController();
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             mergeController.mergeDocuments(splitDocuments).save(baos);
-            return WebResponseUtils.bytesToWebResponse(
-                    baos.toByteArray(),
-                    filename + "_split.pdf",
-                    MediaType.APPLICATION_OCTET_STREAM);
+            return WebResponseUtils.bytesToWebResponse(baos.toByteArray(), filename + "_split.pdf");
         }
         for (PDDocument doc : splitDocuments) {
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
@@ -95,10 +97,10 @@ public class SplitPdfBySectionsController {
                 if (sectionNum == horiz * verti) pageNum++;
             }
         } catch (Exception e) {
-            e.printStackTrace();
+            logger.error("exception", e);
         } finally {
             data = Files.readAllBytes(zipFile);
-            Files.delete(zipFile);
+            Files.deleteIfExists(zipFile);
         }
 
         return WebResponseUtils.bytesToWebResponse(

src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySizeController.java

@@ -10,6 +10,8 @@ import java.util.zip.ZipOutputStream;
 import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -31,6 +33,8 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "General", description = "General APIs")
 public class SplitPdfBySizeController {
 
+    private static final Logger logger = LoggerFactory.getLogger(SplitPdfBySizeController.class);
+
     @PostMapping(value = "/split-by-size-or-count", consumes = "multipart/form-data")
     @Operation(
             summary = "Auto split PDF pages into separate documents based on size or count",
@@ -66,7 +70,7 @@ public class SplitPdfBySizeController {
             }
 
         } catch (Exception e) {
-            e.printStackTrace();
+            logger.error("exception", e);
         } finally {
             data = Files.readAllBytes(zipFile);
             Files.deleteIfExists(zipFile);

src/main/java/stirling/software/SPDF/controller/api/UserController.java

@@ -47,8 +47,11 @@ public class UserController {
             model.addAttribute("error", "Username already exists");
             return "register";
         }
-
-        userService.saveUser(requestModel.getUsername(), requestModel.getPassword());
+        try {
+            userService.saveUser(requestModel.getUsername(), requestModel.getPassword());
+        } catch (IllegalArgumentException e) {
+            return "redirect:/login?messageType=invalidUsername";
+        }
         return "redirect:/login?registered=true";
     }
 
@@ -63,42 +66,46 @@ public class UserController {
             RedirectAttributes redirectAttributes) {
 
         if (!userService.isUsernameValid(newUsername)) {
-            return new RedirectView("/account?messageType=invalidUsername");
+            return new RedirectView("/account?messageType=invalidUsername", true);
         }
 
         if (principal == null) {
-            return new RedirectView("/account?messageType=notAuthenticated");
+            return new RedirectView("/account?messageType=notAuthenticated", true);
         }
 
         // The username MUST be unique when renaming
         Optional<User> userOpt = userService.findByUsername(principal.getName());
 
         if (userOpt == null || userOpt.isEmpty()) {
-            return new RedirectView("/account?messageType=userNotFound");
+            return new RedirectView("/account?messageType=userNotFound", true);
         }
 
         User user = userOpt.get();
 
         if (user.getUsername().equals(newUsername)) {
-            return new RedirectView("/account?messageType=usernameExists");
+            return new RedirectView("/account?messageType=usernameExists", true);
         }
 
         if (!userService.isPasswordCorrect(user, currentPassword)) {
-            return new RedirectView("/account?messageType=incorrectPassword");
+            return new RedirectView("/account?messageType=incorrectPassword", true);
         }
 
         if (!user.getUsername().equals(newUsername) && userService.usernameExists(newUsername)) {
-            return new RedirectView("/account?messageType=usernameExists");
+            return new RedirectView("/account?messageType=usernameExists", true);
         }
 
         if (newUsername != null && newUsername.length() > 0) {
-            userService.changeUsername(user, newUsername);
+            try {
+                userService.changeUsername(user, newUsername);
+            } catch (IllegalArgumentException e) {
+                return new RedirectView("/account?messageType=invalidUsername", true);
+            }
         }
 
         // Logout using Spring's utility
         new SecurityContextLogoutHandler().logout(request, response, null);
 
-        return new RedirectView(LOGIN_MESSAGETYPE_CREDSUPDATED);
+        return new RedirectView(LOGIN_MESSAGETYPE_CREDSUPDATED, true);
     }
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
@@ -111,19 +118,19 @@ public class UserController {
             HttpServletResponse response,
             RedirectAttributes redirectAttributes) {
         if (principal == null) {
-            return new RedirectView("/change-creds?messageType=notAuthenticated");
+            return new RedirectView("/change-creds?messageType=notAuthenticated", true);
         }
 
         Optional<User> userOpt = userService.findByUsernameIgnoreCase(principal.getName());
 
         if (userOpt == null || userOpt.isEmpty()) {
-            return new RedirectView("/change-creds?messageType=userNotFound");
+            return new RedirectView("/change-creds?messageType=userNotFound", true);
         }
 
         User user = userOpt.get();
 
         if (!userService.isPasswordCorrect(user, currentPassword)) {
-            return new RedirectView("/change-creds?messageType=incorrectPassword");
+            return new RedirectView("/change-creds?messageType=incorrectPassword", true);
         }
 
         userService.changePassword(user, newPassword);
@@ -131,7 +138,7 @@ public class UserController {
         // Logout using Spring's utility
         new SecurityContextLogoutHandler().logout(request, response, null);
 
-        return new RedirectView(LOGIN_MESSAGETYPE_CREDSUPDATED);
+        return new RedirectView(LOGIN_MESSAGETYPE_CREDSUPDATED, true);
     }
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
@@ -144,19 +151,19 @@ public class UserController {
             HttpServletResponse response,
             RedirectAttributes redirectAttributes) {
         if (principal == null) {
-            return new RedirectView("/account?messageType=notAuthenticated");
+            return new RedirectView("/account?messageType=notAuthenticated", true);
         }
 
         Optional<User> userOpt = userService.findByUsernameIgnoreCase(principal.getName());
 
         if (userOpt == null || userOpt.isEmpty()) {
-            return new RedirectView("/account?messageType=userNotFound");
+            return new RedirectView("/account?messageType=userNotFound", true);
         }
 
         User user = userOpt.get();
 
         if (!userService.isPasswordCorrect(user, currentPassword)) {
-            return new RedirectView("/account?messageType=incorrectPassword");
+            return new RedirectView("/account?messageType=incorrectPassword", true);
         }
 
         userService.changePassword(user, newPassword);
@@ -164,7 +171,7 @@ public class UserController {
         // Logout using Spring's utility
         new SecurityContextLogoutHandler().logout(request, response, null);
 
-        return new RedirectView(LOGIN_MESSAGETYPE_CREDSUPDATED);
+        return new RedirectView(LOGIN_MESSAGETYPE_CREDSUPDATED, true);
     }
 
     @PreAuthorize("!hasAuthority('ROLE_DEMO_USER')")
@@ -197,7 +204,7 @@ public class UserController {
                     boolean forceChange) {
 
         if (!userService.isUsernameValid(username)) {
-            return new RedirectView("/addUsers?messageType=invalidUsername");
+            return new RedirectView("/addUsers?messageType=invalidUsername", true);
         }
 
         Optional<User> userOpt = userService.findByUsernameIgnoreCase(username);
@@ -205,26 +212,67 @@ public class UserController {
         if (userOpt.isPresent()) {
             User user = userOpt.get();
             if (user != null && user.getUsername().equalsIgnoreCase(username)) {
-                return new RedirectView("/addUsers?messageType=usernameExists");
+                return new RedirectView("/addUsers?messageType=usernameExists", true);
             }
         }
         if (userService.usernameExistsIgnoreCase(username)) {
-            return new RedirectView("/addUsers?messageType=usernameExists");
+            return new RedirectView("/addUsers?messageType=usernameExists", true);
         }
         try {
             // Validate the role
             Role roleEnum = Role.fromString(role);
             if (roleEnum == Role.INTERNAL_API_USER) {
                 // If the role is INTERNAL_API_USER, reject the request
-                return new RedirectView("/addUsers?messageType=invalidRole");
+                return new RedirectView("/addUsers?messageType=invalidRole", true);
             }
         } catch (IllegalArgumentException e) {
             // If the role ID is not valid, redirect with an error message
-            return new RedirectView("/addUsers?messageType=invalidRole");
+            return new RedirectView("/addUsers?messageType=invalidRole", true);
         }
 
         userService.saveUser(username, password, role, forceChange);
-        return new RedirectView("/addUsers"); // Redirect to account page after adding the user
+        return new RedirectView(
+                "/addUsers", true); // Redirect to account page after adding the user
+    }
+
+    @PreAuthorize("hasRole('ROLE_ADMIN')")
+    @PostMapping("/admin/changeRole")
+    public RedirectView changeRole(
+            @RequestParam(name = "username") String username,
+            @RequestParam(name = "role") String role,
+            Authentication authentication) {
+
+        Optional<User> userOpt = userService.findByUsernameIgnoreCase(username);
+
+        if (!userOpt.isPresent()) {
+            return new RedirectView("/addUsers?messageType=userNotFound", true);
+        }
+        if (!userService.usernameExistsIgnoreCase(username)) {
+            return new RedirectView("/addUsers?messageType=userNotFound", true);
+        }
+        // Get the currently authenticated username
+        String currentUsername = authentication.getName();
+
+        // Check if the provided username matches the current session's username
+        if (currentUsername.equalsIgnoreCase(username)) {
+            return new RedirectView("/addUsers?messageType=downgradeCurrentUser", true);
+        }
+        try {
+            // Validate the role
+            Role roleEnum = Role.fromString(role);
+            if (roleEnum == Role.INTERNAL_API_USER) {
+                // If the role is INTERNAL_API_USER, reject the request
+                return new RedirectView("/addUsers?messageType=invalidRole", true);
+            }
+        } catch (IllegalArgumentException e) {
+            // If the role ID is not valid, redirect with an error message
+            return new RedirectView("/addUsers?messageType=invalidRole", true);
+        }
+        User user = userOpt.get();
+
+        userService.changeRole(user, role);
+        return new RedirectView(
+                "/addUsers", true); // Redirect to account page after adding the user
     }
 
     @PreAuthorize("hasRole('ROLE_ADMIN')")
@@ -233,7 +281,7 @@ public class UserController {
             @PathVariable(name = "username") String username, Authentication authentication) {
 
         if (!userService.usernameExistsIgnoreCase(username)) {
-            return new RedirectView("/addUsers?messageType=deleteUsernameExists");
+            return new RedirectView("/addUsers?messageType=deleteUsernameExists", true);
         }
 
         // Get the currently authenticated username
@@ -241,11 +289,11 @@ public class UserController {
 
         // Check if the provided username matches the current session's username
         if (currentUsername.equalsIgnoreCase(username)) {
-            return new RedirectView("/addUsers?messageType=deleteCurrentUser");
+            return new RedirectView("/addUsers?messageType=deleteCurrentUser", true);
         }
         invalidateUserSessions(username);
         userService.deleteUser(username);
-        return new RedirectView("/addUsers");
+        return new RedirectView("/addUsers", true);
     }
 
     @Autowired private SessionRegistry sessionRegistry;

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertImgPDFController.java

@@ -36,7 +36,7 @@ public class ConvertImgPDFController {
             description =
                     "This endpoint converts a PDF file to image(s) with the specified image format, color type, and DPI. Users can choose to get a single image or multiple images.  Input:PDF Output:Image Type:SI-Conditional")
     public ResponseEntity<byte[]> convertToImage(@ModelAttribute ConvertToImageRequest request)
-            throws IOException {
+            throws NumberFormatException, Exception {
         MultipartFile file = request.getFileInput();
         String imageFormat = request.getImageFormat();
         String singleOrMultiple = request.getSingleOrMultiple();
@@ -56,25 +56,21 @@ public class ConvertImgPDFController {
         String filename =
                 Filenames.toSimpleFileName(file.getOriginalFilename())
                         .replaceFirst("[.][^.]+$", "");
-        try {
-            result =
-                    PdfUtils.convertFromPdf(
-                            pdfBytes,
-                            imageFormat.toUpperCase(),
-                            colorTypeResult,
-                            singleImage,
-                            Integer.valueOf(dpi),
-                            filename);
-        } catch (IOException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        } catch (Exception e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
 
+        result =
+                PdfUtils.convertFromPdf(
+                        pdfBytes,
+                        imageFormat.toUpperCase(),
+                        colorTypeResult,
+                        singleImage,
+                        Integer.valueOf(dpi),
+                        filename);
+
+        if (result == null || result.length == 0) {
+            logger.error("resultant bytes for {} is null, error converting ", filename);
+        }
         if (singleImage) {
-            String docName = filename + "." + imageFormat; 
+            String docName = filename + "." + imageFormat;
             MediaType mediaType = MediaType.parseMediaType(getMediaType(imageFormat));
             return WebResponseUtils.bytesToWebResponse(result, docName, mediaType);
         } else {

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertOfficeController.java

@@ -3,7 +3,6 @@ package stirling.software.SPDF.controller.api.converters;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.file.StandardCopyOption;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -41,34 +40,35 @@ public class ConvertOfficeController {
         // Save the uploaded file to a temporary location
         Path tempInputFile =
                 Files.createTempFile("input_", "." + FilenameUtils.getExtension(originalFilename));
-        Files.copy(inputFile.getInputStream(), tempInputFile, StandardCopyOption.REPLACE_EXISTING);
+        inputFile.transferTo(tempInputFile);
 
         // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
 
-        // Run the LibreOffice command
-        List<String> command =
-                new ArrayList<>(
-                        Arrays.asList(
-                                "unoconv",
-                                "-vvv",
-                                "-f",
-                                "pdf",
-                                "-o",
-                                tempOutputFile.toString(),
-                                tempInputFile.toString()));
-        ProcessExecutorResult returnCode =
-                ProcessExecutor.getInstance(ProcessExecutor.Processes.LIBRE_OFFICE)
-                        .runCommandWithOutputHandling(command);
+        try {
+            // Run the LibreOffice command
+            List<String> command =
+                    new ArrayList<>(
+                            Arrays.asList(
+                                    "unoconv",
+                                    "-vvv",
+                                    "-f",
+                                    "pdf",
+                                    "-o",
+                                    tempOutputFile.toString(),
+                                    tempInputFile.toString()));
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.LIBRE_OFFICE)
+                            .runCommandWithOutputHandling(command);
 
-        // Read the converted PDF file
-        byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
-
-        // Clean up the temporary files
-        Files.delete(tempInputFile);
-        Files.delete(tempOutputFile);
-
-        return pdfBytes;
+            // Read the converted PDF file
+            byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
+            return pdfBytes;
+        } finally {
+            // Clean up the temporary files
+            if (tempInputFile != null) Files.deleteIfExists(tempInputFile);
+            Files.deleteIfExists(tempOutputFile);
+        }
     }
 
     private boolean isValidFileExtension(String fileExtension) {

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertPDFToPDFA.java

@@ -1,10 +1,22 @@
 package stirling.software.SPDF.controller.api.converters;
 
+import java.io.ByteArrayOutputStream;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -26,6 +38,8 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Convert", description = "Convert APIs")
 public class ConvertPDFToPDFA {
 
+    private static final Logger logger = LoggerFactory.getLogger(ConvertPDFToPDFA.class);
+
     @PostMapping(consumes = "multipart/form-data", value = "/pdf/pdfa")
     @Operation(
             summary = "Convert a PDF to a PDF/A",
@@ -36,9 +50,39 @@ public class ConvertPDFToPDFA {
         MultipartFile inputFile = request.getFileInput();
         String outputFormat = request.getOutputFormat();
 
-        // Save the uploaded file to a temporary location
+        // Convert MultipartFile to byte[]
+        byte[] pdfBytes = inputFile.getBytes();
+
+        // Load the PDF document
+        PDDocument document = Loader.loadPDF(pdfBytes);
+
+        // Get the document catalog
+        PDDocumentCatalog catalog = document.getDocumentCatalog();
+
+        // Get the AcroForm
+        PDAcroForm acroForm = catalog.getAcroForm();
+        if (acroForm != null) {
+            // Remove signature fields safely
+            List<PDField> fieldsToRemove =
+                    acroForm.getFields().stream()
+                            .filter(field -> field instanceof PDSignatureField)
+                            .collect(Collectors.toList());
+
+            if (!fieldsToRemove.isEmpty()) {
+                acroForm.flatten(fieldsToRemove, false);
+
+                ByteArrayOutputStream baos = new ByteArrayOutputStream();
+                document.save(baos);
+                pdfBytes = baos.toByteArray();
+            }
+        }
+        document.close();
+
+        // Save the uploaded (and possibly modified) file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
-        inputFile.transferTo(tempInputFile.toFile());
+        try (OutputStream outputStream = new FileOutputStream(tempInputFile.toFile())) {
+            outputStream.write(pdfBytes);
+        }
 
         // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
@@ -58,17 +102,17 @@ public class ConvertPDFToPDFA {
                         .runCommandWithOutputHandling(command);
 
         // Read the optimized PDF file
-        byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
+        byte[] optimizedPdfBytes = Files.readAllBytes(tempOutputFile);
 
         // Clean up the temporary files
-        Files.delete(tempInputFile);
-        Files.delete(tempOutputFile);
+        Files.deleteIfExists(tempInputFile);
+        Files.deleteIfExists(tempOutputFile);
 
         // Return the optimized PDF as a response
         String outputFilename =
                 Filenames.toSimpleFileName(inputFile.getOriginalFilename())
                                 .replaceFirst("[.][^.]+$", "")
                         + "_PDFA.pdf";
-        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+        return WebResponseUtils.bytesToWebResponse(optimizedPdfBytes, outputFilename);
     }
 }

src/main/java/stirling/software/SPDF/controller/api/converters/ConvertWebsiteToPDF.java

@@ -59,7 +59,7 @@ public class ConvertWebsiteToPDF {
             pdfBytes = Files.readAllBytes(tempOutputFile);
         } finally {
             // Clean up the temporary files
-            Files.delete(tempOutputFile);
+            Files.deleteIfExists(tempOutputFile);
         }
         // Convert URL to a safe filename
         String outputFilename = convertURLToFileName(URL);

src/main/java/stirling/software/SPDF/controller/api/misc/AutoSplitPdfController.java

@@ -15,6 +15,8 @@ import java.util.zip.ZipOutputStream;
 import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.rendering.PDFRenderer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -43,6 +45,7 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class AutoSplitPdfController {
 
+    private static final Logger logger = LoggerFactory.getLogger(AutoSplitPdfController.class);
     private static final String QR_CONTENT = "https://github.com/Stirling-Tools/Stirling-PDF";
     private static final String QR_CONTENT_OLD = "https://github.com/Frooodle/Stirling-PDF";
 
@@ -115,10 +118,10 @@ public class AutoSplitPdfController {
                 zipOut.closeEntry();
             }
         } catch (Exception e) {
-            e.printStackTrace();
+            logger.error("exception", e);
         } finally {
             data = Files.readAllBytes(zipFile);
-            Files.delete(zipFile);
+            Files.deleteIfExists(zipFile);
         }
 
         return WebResponseUtils.bytesToWebResponse(

src/main/java/stirling/software/SPDF/controller/api/misc/BlankPageController.java

@@ -67,7 +67,7 @@ public class BlankPageController {
                 String pageText = textStripper.getText(document);
                 boolean hasText = !pageText.trim().isEmpty();
 
-                Boolean blank = false;
+                Boolean blank = true;
                 if (hasText) {
                     logger.info("page " + pageIndex + " has text, not blank");
                     blank = false;
@@ -106,7 +106,7 @@ public class BlankPageController {
                                     .replaceFirst("[.][^.]+$", "")
                             + "_blanksRemoved.pdf");
         } catch (IOException e) {
-            e.printStackTrace();
+            logger.error("exception", e);
             return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
         } finally {
             if (document != null) document.close();

src/main/java/stirling/software/SPDF/controller/api/misc/CompressController.java

@@ -136,10 +136,10 @@ public class CompressController {
                     // Increase optimization level for next iteration
                     optimizeLevel++;
                     if (autoMode && optimizeLevel > 4) {
-                        System.out.println("Skipping level 5 due to bad results in auto mode");
+                        logger.info("Skipping level 5 due to bad results in auto mode");
                         sizeMet = true;
                     } else {
-                        System.out.println(
+                        logger.info(
                                 "Increasing ghostscript optimisation level to " + optimizeLevel);
                     }
                 }
@@ -230,10 +230,10 @@ public class CompressController {
                             if (currentSize > expectedOutputSize) {
                                 // Log the current file size and scaleFactor
 
-                                System.out.println(
+                                logger.info(
                                         "Current file size: "
                                                 + FileUtils.byteCountToDisplaySize(currentSize));
-                                System.out.println("Current scale factor: " + scaleFactor);
+                                logger.info("Current scale factor: " + scaleFactor);
 
                                 // The file is still too large, reduce scaleFactor and try again
                                 scaleFactor *= 0.9f; // reduce scaleFactor by 10%
@@ -256,7 +256,6 @@ public class CompressController {
                     }
                 }
             }
-
             // Read the optimized PDF file
             pdfBytes = Files.readAllBytes(tempOutputFile);
 
@@ -269,17 +268,18 @@ public class CompressController {
                 // Read the original file again
                 pdfBytes = Files.readAllBytes(tempInputFile);
             }
+            // Return the optimized PDF as a response
+            String outputFilename =
+                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+                                    .replaceFirst("[.][^.]+$", "")
+                            + "_Optimized.pdf";
+            return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+
         } finally {
             // Clean up the temporary files
-            Files.delete(tempInputFile);
-            Files.delete(tempOutputFile);
+            // deleted by multipart file handler deu to transferTo?
+            // Files.deleteIfExists(tempInputFile);
+            Files.deleteIfExists(tempOutputFile);
         }
-
-        // Return the optimized PDF as a response
-        String outputFilename =
-                Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                .replaceFirst("[.][^.]+$", "")
-                        + "_Optimized.pdf";
-        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
     }
 }

src/main/java/stirling/software/SPDF/controller/api/misc/ExtractImageScansController.java

@@ -5,7 +5,6 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.file.StandardCopyOption;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -103,10 +102,7 @@ public class ExtractImageScansController {
                 }
             } else {
                 tempInputFile = Files.createTempFile("input_", "." + extension);
-                Files.copy(
-                        form.getFileInput().getInputStream(),
-                        tempInputFile,
-                        StandardCopyOption.REPLACE_EXISTING);
+                form.getFileInput().transferTo(tempInputFile);
                 // Add input file path to images list
                 images.add(tempInputFile.toString());
             }
@@ -176,11 +172,15 @@ public class ExtractImageScansController {
                 byte[] zipBytes = Files.readAllBytes(tempZipFile);
 
                 // Clean up the temporary zip file
-                Files.delete(tempZipFile);
+                Files.deleteIfExists(tempZipFile);
 
                 return WebResponseUtils.bytesToWebResponse(
                         zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
+            }
+            if (processedImageBytes.size() == 0) {
+                throw new IllegalArgumentException("No images detected");
             } else {
+
                 // Return the processed image as a response
                 byte[] imageBytes = processedImageBytes.get(0);
                 return WebResponseUtils.bytesToWebResponse(
@@ -201,7 +201,7 @@ public class ExtractImageScansController {
 
             if (tempZipFile != null && Files.exists(tempZipFile)) {
                 try {
-                    Files.delete(tempZipFile);
+                    Files.deleteIfExists(tempZipFile);
                 } catch (IOException e) {
                     logger.error("Failed to delete temporary zip file: " + tempZipFile, e);
                 }

src/main/java/stirling/software/SPDF/controller/api/misc/FakeScanControllerWIP.java

@@ -110,8 +110,8 @@ public class FakeScanControllerWIP {
     private BufferedImage rotate(BufferedImage image, double rotation) {
 
         double rotationRequired = Math.toRadians(rotation);
-        double locationX = image.getWidth() / 2;
-        double locationY = image.getHeight() / 2;
+        double locationX = (double) image.getWidth() / 2;
+        double locationY = (double) image.getHeight() / 2;
         AffineTransform tx =
                 AffineTransform.getRotateInstance(rotationRequired, locationX, locationY);
         AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BICUBIC);
@@ -127,8 +127,8 @@ public class FakeScanControllerWIP {
 
         for (int i = -radius; i <= radius; i++) {
             for (int j = -radius; j <= radius; j++) {
-                double xDistance = i * i;
-                double yDistance = j * j;
+                double xDistance = (double) i * i;
+                double yDistance = (double) j * j;
                 double g = Math.exp(-(xDistance + yDistance) / (2 * sigma * sigma));
                 data[(i + radius) * size + j + radius] = (float) g;
                 sum += g;
@@ -137,7 +137,7 @@ public class FakeScanControllerWIP {
 
         // Normalize the kernel
         for (int i = 0; i < data.length; i++) {
-            data[i] /= sum;
+            if (sum != 0) data[i] /= sum;
         }
 
         Kernel kernel = new Kernel(size, size, data);
@@ -166,7 +166,7 @@ public class FakeScanControllerWIP {
                         0,
                         new Color(0, 0, 0, 1f),
                         0,
-                        featherRadius * 2,
+                        featherRadius * 2f,
                         new Color(0, 0, 0, 0f)));
         g2.fillRect(0, 0, width, featherRadius);
 
@@ -174,7 +174,7 @@ public class FakeScanControllerWIP {
         g2.setPaint(
                 new GradientPaint(
                         0,
-                        height - featherRadius * 2,
+                        height - featherRadius * 2f,
                         new Color(0, 0, 0, 0f),
                         0,
                         height,
@@ -187,7 +187,7 @@ public class FakeScanControllerWIP {
                         0,
                         0,
                         new Color(0, 0, 0, 1f),
-                        featherRadius * 2,
+                        featherRadius * 2f,
                         0,
                         new Color(0, 0, 0, 0f)));
         g2.fillRect(0, 0, featherRadius, height);
@@ -195,7 +195,7 @@ public class FakeScanControllerWIP {
         // Right edge
         g2.setPaint(
                 new GradientPaint(
-                        width - featherRadius * 2,
+                        width - featherRadius * 2f,
                         0,
                         new Color(0, 0, 0, 0f),
                         width,
@@ -244,7 +244,7 @@ public class FakeScanControllerWIP {
             int y2 = y1 + random.nextInt(20) - 10;
             Path2D.Double hair = new Path2D.Double();
             hair.moveTo(x1, y1);
-            hair.curveTo(x1, y1, (x1 + x2) / 2, (y1 + y2) / 2, x2, y2);
+            hair.curveTo(x1, y1, (double) (x1 + x2) / 2, (double) (y1 + y2) / 2, x2, y2);
             g2d.draw(hair);
         }
 

src/main/java/stirling/software/SPDF/controller/api/misc/FlattenController.java

@@ -0,0 +1,88 @@
+package stirling.software.SPDF.controller.api.misc;
+
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageContentStream;
+import org.apache.pdfbox.pdmodel.graphics.image.JPEGFactory;
+import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.rendering.ImageType;
+import org.apache.pdfbox.rendering.PDFRenderer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.github.pixee.security.Filenames;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.PdfMetadata;
+import stirling.software.SPDF.model.api.misc.FlattenRequest;
+import stirling.software.SPDF.utils.PdfUtils;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@RequestMapping("/api/v1/misc")
+@Tag(name = "Misc", description = "Miscellaneous APIs")
+public class FlattenController {
+
+    private static final Logger logger = LoggerFactory.getLogger(FlattenController.class);
+
+    @PostMapping(consumes = "multipart/form-data", value = "/flatten")
+    @Operation(
+            summary = "Flatten PDF form fields or full page",
+            description =
+                    "Flattening just PDF form fields or converting each page to images to make text unselectable. Input: PDF, Output: PDF. Type: SISO")
+    public ResponseEntity<byte[]> flatten(@ModelAttribute FlattenRequest request) throws Exception {
+        MultipartFile file = request.getFileInput();
+
+        PDDocument document = Loader.loadPDF(file.getBytes());
+        PdfMetadata metadata = PdfUtils.extractMetadataFromPdf(document);
+        Boolean flattenOnlyForms = request.getFlattenOnlyForms();
+
+        if (Boolean.TRUE.equals(flattenOnlyForms)) {
+            PDAcroForm acroForm = document.getDocumentCatalog().getAcroForm();
+            if (acroForm != null) {
+                acroForm.flatten();
+            }
+            return WebResponseUtils.pdfDocToWebResponse(
+                    document, Filenames.toSimpleFileName(file.getOriginalFilename()));
+        } else {
+            // flatten whole page aka convert each page to image and readd it (making text
+            // unselectable)
+            PDFRenderer pdfRenderer = new PDFRenderer(document);
+            PDDocument newDocument = new PDDocument();
+            int numPages = document.getNumberOfPages();
+            for (int i = 0; i < numPages; i++) {
+                try {
+                    BufferedImage image = pdfRenderer.renderImageWithDPI(i, 300, ImageType.RGB);
+                    PDPage page = new PDPage();
+                    page.setMediaBox(document.getPage(i).getMediaBox());
+                    newDocument.addPage(page);
+                    try (PDPageContentStream contentStream =
+                            new PDPageContentStream(newDocument, page)) {
+                        PDImageXObject pdImage = JPEGFactory.createFromImage(newDocument, image);
+                        float pageWidth = page.getMediaBox().getWidth();
+                        float pageHeight = page.getMediaBox().getHeight();
+
+                        contentStream.drawImage(pdImage, 0, 0, pageWidth, pageHeight);
+                    }
+                } catch (IOException e) {
+                    logger.error("exception", e);
+                }
+            }
+            PdfUtils.setMetadataToPdf(newDocument, metadata);
+            return WebResponseUtils.pdfDocToWebResponse(
+                    newDocument, Filenames.toSimpleFileName(file.getOriginalFilename()));
+        }
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/misc/MetadataController.java

@@ -11,6 +11,8 @@ import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.cos.COSName;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDDocumentInformation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -30,6 +32,8 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous APIs")
 public class MetadataController {
 
+    private static final Logger logger = LoggerFactory.getLogger(MetadataController.class);
+
     private String checkUndefined(String entry) {
         // Check if the string is "undefined"
         if ("undefined".equals(entry)) {
@@ -136,7 +140,7 @@ public class MetadataController {
                 creationDateCal.setTime(
                         new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(creationDate));
             } catch (ParseException e) {
-                e.printStackTrace();
+                logger.error("exception", e);
             }
             info.setCreationDate(creationDateCal);
         } else {
@@ -148,7 +152,7 @@ public class MetadataController {
                 modificationDateCal.setTime(
                         new SimpleDateFormat("yyyy/MM/dd HH:mm:ss").parse(modificationDate));
             } catch (ParseException e) {
-                e.printStackTrace();
+                logger.error("exception", e);
             }
             info.setModificationDate(modificationDateCal);
         } else {

src/main/java/stirling/software/SPDF/controller/api/misc/OCRController.java

@@ -5,7 +5,6 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.file.StandardCopyOption;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -91,139 +90,145 @@ public class OCRController {
         }
         // Save the uploaded file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
-        Files.copy(inputFile.getInputStream(), tempInputFile, StandardCopyOption.REPLACE_EXISTING);
-
-        // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
-
-        // Prepare the output file path
         Path sidecarTextPath = null;
 
-        // Run OCR Command
-        String languageOption = String.join("+", selectedLanguages);
+        try {
+            inputFile.transferTo(tempInputFile.toFile());
 
-        List<String> command =
-                new ArrayList<>(
-                        Arrays.asList(
-                                "ocrmypdf",
-                                "--verbose",
-                                "2",
-                                "--output-type",
-                                "pdf",
-                                "--pdf-renderer",
-                                ocrRenderType));
+            // Run OCR Command
+            String languageOption = String.join("+", selectedLanguages);
 
-        if (sidecar != null && sidecar) {
-            sidecarTextPath = Files.createTempFile("sidecar", ".txt");
-            command.add("--sidecar");
-            command.add(sidecarTextPath.toString());
-        }
-
-        if (deskew != null && deskew) {
-            command.add("--deskew");
-        }
-        if (clean != null && clean) {
-            command.add("--clean");
-        }
-        if (cleanFinal != null && cleanFinal) {
-            command.add("--clean-final");
-        }
-        if (ocrType != null && !"".equals(ocrType)) {
-            if ("skip-text".equals(ocrType)) {
-                command.add("--skip-text");
-            } else if ("force-ocr".equals(ocrType)) {
-                command.add("--force-ocr");
-            } else if ("Normal".equals(ocrType)) {
+            List<String> command =
+                    new ArrayList<>(
+                            Arrays.asList(
+                                    "ocrmypdf",
+                                    "--verbose",
+                                    "2",
+                                    "--output-type",
+                                    "pdf",
+                                    "--pdf-renderer",
+                                    ocrRenderType));
 
+            if (sidecar != null && sidecar) {
+                sidecarTextPath = Files.createTempFile("sidecar", ".txt");
+                command.add("--sidecar");
+                command.add(sidecarTextPath.toString());
             }
-        }
 
-        command.addAll(
-                Arrays.asList(
-                        "--language",
-                        languageOption,
-                        tempInputFile.toString(),
-                        tempOutputFile.toString()));
+            if (deskew != null && deskew) {
+                command.add("--deskew");
+            }
+            if (clean != null && clean) {
+                command.add("--clean");
+            }
+            if (cleanFinal != null && cleanFinal) {
+                command.add("--clean-final");
+            }
+            if (ocrType != null && !"".equals(ocrType)) {
+                if ("skip-text".equals(ocrType)) {
+                    command.add("--skip-text");
+                } else if ("force-ocr".equals(ocrType)) {
+                    command.add("--force-ocr");
+                } else if ("Normal".equals(ocrType)) {
 
-        // Run CLI command
-        ProcessExecutorResult result =
-                ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
-                        .runCommandWithOutputHandling(command);
-        if (result.getRc() != 0
-                && result.getMessages().contains("multiprocessing/synchronize.py")
-                && result.getMessages().contains("OSError: [Errno 38] Function not implemented")) {
-            command.add("--jobs");
-            command.add("1");
-            result =
+                }
+            }
+
+            command.addAll(
+                    Arrays.asList(
+                            "--language",
+                            languageOption,
+                            tempInputFile.toString(),
+                            tempOutputFile.toString()));
+
+            // Run CLI command
+            ProcessExecutorResult result =
                     ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
                             .runCommandWithOutputHandling(command);
-        }
-
-        // Remove images from the OCR processed PDF if the flag is set to true
-        if (removeImagesAfter != null && removeImagesAfter) {
-            Path tempPdfWithoutImages = Files.createTempFile("output_", "_no_images.pdf");
-
-            List<String> gsCommand =
-                    Arrays.asList(
-                            "gs",
-                            "-sDEVICE=pdfwrite",
-                            "-dFILTERIMAGE",
-                            "-o",
-                            tempPdfWithoutImages.toString(),
-                            tempOutputFile.toString());
-
-            ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
-                    .runCommandWithOutputHandling(gsCommand);
-            tempOutputFile = tempPdfWithoutImages;
-        }
-        // Read the OCR processed PDF file
-        byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
-        // Clean up the temporary files
-        Files.delete(tempInputFile);
-
-        // Return the OCR processed PDF as a response
-        String outputFilename =
-                Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                .replaceFirst("[.][^.]+$", "")
-                        + "_OCR.pdf";
-
-        if (sidecar != null && sidecar) {
-            // Create a zip file containing both the PDF and the text file
-            String outputZipFilename =
-                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                    .replaceFirst("[.][^.]+$", "")
-                            + "_OCR.zip";
-            Path tempZipFile = Files.createTempFile("output_", ".zip");
-
-            try (ZipOutputStream zipOut =
-                    new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
-                // Add PDF file to the zip
-                ZipEntry pdfEntry = new ZipEntry(outputFilename);
-                zipOut.putNextEntry(pdfEntry);
-                Files.copy(tempOutputFile, zipOut);
-                zipOut.closeEntry();
-
-                // Add text file to the zip
-                ZipEntry txtEntry = new ZipEntry(outputFilename.replace(".pdf", ".txt"));
-                zipOut.putNextEntry(txtEntry);
-                Files.copy(sidecarTextPath, zipOut);
-                zipOut.closeEntry();
+            if (result.getRc() != 0
+                    && result.getMessages().contains("multiprocessing/synchronize.py")
+                    && result.getMessages()
+                            .contains("OSError: [Errno 38] Function not implemented")) {
+                command.add("--jobs");
+                command.add("1");
+                result =
+                        ProcessExecutor.getInstance(ProcessExecutor.Processes.OCR_MY_PDF)
+                                .runCommandWithOutputHandling(command);
             }
 
-            byte[] zipBytes = Files.readAllBytes(tempZipFile);
+            // Remove images from the OCR processed PDF if the flag is set to true
+            if (removeImagesAfter != null && removeImagesAfter) {
+                Path tempPdfWithoutImages = Files.createTempFile("output_", "_no_images.pdf");
 
-            // Clean up the temporary zip file
-            Files.delete(tempZipFile);
-            Files.delete(tempOutputFile);
-            Files.delete(sidecarTextPath);
+                List<String> gsCommand =
+                        Arrays.asList(
+                                "gs",
+                                "-sDEVICE=pdfwrite",
+                                "-dFILTERIMAGE",
+                                "-o",
+                                tempPdfWithoutImages.toString(),
+                                tempOutputFile.toString());
+
+                ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
+                        .runCommandWithOutputHandling(gsCommand);
+                tempOutputFile = tempPdfWithoutImages;
+            }
+            // Read the OCR processed PDF file
+            byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
 
-            // Return the zip file containing both the PDF and the text file
-            return WebResponseUtils.bytesToWebResponse(
-                    zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
-        } else {
             // Return the OCR processed PDF as a response
-            Files.delete(tempOutputFile);
-            return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+            String outputFilename =
+                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+                                    .replaceFirst("[.][^.]+$", "")
+                            + "_OCR.pdf";
+
+            if (sidecar != null && sidecar) {
+                // Create a zip file containing both the PDF and the text file
+                String outputZipFilename =
+                        Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+                                        .replaceFirst("[.][^.]+$", "")
+                                + "_OCR.zip";
+                Path tempZipFile = Files.createTempFile("output_", ".zip");
+
+                try (ZipOutputStream zipOut =
+                        new ZipOutputStream(new FileOutputStream(tempZipFile.toFile()))) {
+                    // Add PDF file to the zip
+                    ZipEntry pdfEntry = new ZipEntry(outputFilename);
+                    zipOut.putNextEntry(pdfEntry);
+                    Files.copy(tempOutputFile, zipOut);
+                    zipOut.closeEntry();
+
+                    // Add text file to the zip
+                    ZipEntry txtEntry = new ZipEntry(outputFilename.replace(".pdf", ".txt"));
+                    zipOut.putNextEntry(txtEntry);
+                    Files.copy(sidecarTextPath, zipOut);
+                    zipOut.closeEntry();
+                }
+
+                byte[] zipBytes = Files.readAllBytes(tempZipFile);
+
+                // Clean up the temporary zip file
+                Files.deleteIfExists(tempZipFile);
+                Files.deleteIfExists(tempOutputFile);
+                Files.deleteIfExists(sidecarTextPath);
+
+                // Return the zip file containing both the PDF and the text file
+                return WebResponseUtils.bytesToWebResponse(
+                        zipBytes, outputZipFilename, MediaType.APPLICATION_OCTET_STREAM);
+            } else {
+                // Return the OCR processed PDF as a response
+                Files.deleteIfExists(tempOutputFile);
+                return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+            }
+        } finally {
+            // Clean up the temporary files
+            Files.deleteIfExists(tempOutputFile);
+            // Comment out as transferTo makes multipart handle cleanup
+            // Files.deleteIfExists(tempInputFile);
+            if (sidecarTextPath != null) {
+                Files.deleteIfExists(sidecarTextPath);
+            }
         }
     }
 }

src/main/java/stirling/software/SPDF/controller/api/misc/RepairController.java

@@ -41,34 +41,35 @@ public class RepairController {
         MultipartFile inputFile = request.getFileInput();
         // Save the uploaded file to a temporary location
         Path tempInputFile = Files.createTempFile("input_", ".pdf");
-        inputFile.transferTo(tempInputFile.toFile());
-
-        // Prepare the output file path
         Path tempOutputFile = Files.createTempFile("output_", ".pdf");
+        byte[] pdfBytes = null;
+        inputFile.transferTo(tempInputFile.toFile());
+        try {
 
-        List<String> command = new ArrayList<>();
-        command.add("gs");
-        command.add("-o");
-        command.add(tempOutputFile.toString());
-        command.add("-sDEVICE=pdfwrite");
-        command.add(tempInputFile.toString());
+            List<String> command = new ArrayList<>();
+            command.add("gs");
+            command.add("-o");
+            command.add(tempOutputFile.toString());
+            command.add("-sDEVICE=pdfwrite");
+            command.add(tempInputFile.toString());
 
-        ProcessExecutorResult returnCode =
-                ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
-                        .runCommandWithOutputHandling(command);
+            ProcessExecutorResult returnCode =
+                    ProcessExecutor.getInstance(ProcessExecutor.Processes.GHOSTSCRIPT)
+                            .runCommandWithOutputHandling(command);
 
-        // Read the optimized PDF file
-        byte[] pdfBytes = Files.readAllBytes(tempOutputFile);
+            // Read the optimized PDF file
+            pdfBytes = Files.readAllBytes(tempOutputFile);
 
-        // Clean up the temporary files
-        Files.delete(tempInputFile);
-        Files.delete(tempOutputFile);
-
-        // Return the optimized PDF as a response
-        String outputFilename =
-                Filenames.toSimpleFileName(inputFile.getOriginalFilename())
-                                .replaceFirst("[.][^.]+$", "")
-                        + "_repaired.pdf";
-        return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+            // Return the optimized PDF as a response
+            String outputFilename =
+                    Filenames.toSimpleFileName(inputFile.getOriginalFilename())
+                                    .replaceFirst("[.][^.]+$", "")
+                            + "_repaired.pdf";
+            return WebResponseUtils.bytesToWebResponse(pdfBytes, outputFilename);
+        } finally {
+            // Clean up the temporary files
+            Files.deleteIfExists(tempInputFile);
+            Files.deleteIfExists(tempOutputFile);
+        }
     }
 }

src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java

@@ -185,10 +185,12 @@ public class StampController {
             try (InputStream is = classPathResource.getInputStream();
                     FileOutputStream os = new FileOutputStream(tempFile)) {
                 IOUtils.copy(is, os);
+                font = PDType0Font.load(document, tempFile);
+            } finally {
+                if (tempFile != null) {
+                    Files.deleteIfExists(tempFile.toPath());
+                }
             }
-
-            font = PDType0Font.load(document, tempFile);
-            tempFile.deleteOnExit();
         }
 
         contentStream.setFont(font, fontSize);

src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineDirectoryProcessor.java

@@ -19,6 +19,7 @@ import java.util.stream.Stream;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.core.io.ByteArrayResource;
 import org.springframework.core.io.Resource;
 import org.springframework.scheduling.annotation.Scheduled;
@@ -28,6 +29,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 import stirling.software.SPDF.model.PipelineConfig;
 import stirling.software.SPDF.model.PipelineOperation;
+import stirling.software.SPDF.utils.FileMonitor;
 
 @Service
 public class PipelineDirectoryProcessor {
@@ -35,11 +37,18 @@ public class PipelineDirectoryProcessor {
     private static final Logger logger = LoggerFactory.getLogger(PipelineDirectoryProcessor.class);
     @Autowired private ObjectMapper objectMapper;
     @Autowired private ApiDocService apiDocService;
-
-    final String watchedFoldersDir = "./pipeline/watchedFolders/";
-    final String finishedFoldersDir = "./pipeline/finishedFolders/";
-
     @Autowired PipelineProcessor processor;
+    @Autowired FileMonitor fileMonitor;
+
+    final String watchedFoldersDir;
+    final String finishedFoldersDir;
+
+    public PipelineDirectoryProcessor(
+            @Qualifier("watchedFoldersDir") String watchedFoldersDir,
+            @Qualifier("finishedFoldersDir") String finishedFoldersDir) {
+        this.watchedFoldersDir = watchedFoldersDir;
+        this.finishedFoldersDir = finishedFoldersDir;
+    }
 
     @Scheduled(fixedRate = 60000)
     public void scanFolders() {
@@ -130,7 +139,11 @@ public class PipelineDirectoryProcessor {
             throws IOException {
         try (Stream<Path> paths = Files.list(dir)) {
             if ("automated".equals(operation.getParameters().get("fileInput"))) {
-                return paths.filter(path -> !Files.isDirectory(path) && !path.equals(jsonFile))
+                return paths.filter(
+                                path ->
+                                        !Files.isDirectory(path)
+                                                && !path.equals(jsonFile)
+                                                && fileMonitor.isFileReadyForProcessing(path))
                         .map(Path::toFile)
                         .toArray(File[]::new);
             } else {

src/main/java/stirling/software/SPDF/controller/api/pipeline/PipelineProcessor.java

@@ -105,7 +105,14 @@ public class PipelineProcessor {
                             body.add("fileInput", file);
 
                             for (Entry<String, Object> entry : parameters.entrySet()) {
-                                body.add(entry.getKey(), entry.getValue());
+                                if (entry.getValue() instanceof List) {
+                                    List<?> list = (List<?>) entry.getValue();
+                                    for (Object item : list) {
+                                        body.add(entry.getKey(), item);
+                                    }
+                                } else {
+                                    body.add(entry.getKey(), entry.getValue());
+                                }
                             }
 
                             ResponseEntity<byte[]> response = sendWebRequest(url, body);
@@ -167,7 +174,14 @@ public class PipelineProcessor {
                     }
 
                     for (Entry<String, Object> entry : parameters.entrySet()) {
-                        body.add(entry.getKey(), entry.getValue());
+                        if (entry.getValue() instanceof List) {
+                            List<?> list = (List<?>) entry.getValue();
+                            for (Object item : list) {
+                                body.add(entry.getKey(), item);
+                            }
+                        } else {
+                            body.add(entry.getKey(), entry.getValue());
+                        }
                     }
 
                     ResponseEntity<byte[]> response = sendWebRequest(url, body);

src/main/java/stirling/software/SPDF/controller/api/security/CertSignController.java

@@ -148,7 +148,7 @@ public class CertSignController {
             doc.addSignature(signature, instance);
             doc.saveIncremental(output);
         } catch (Exception e) {
-            e.printStackTrace();
+            logger.error("exception", e);
         }
     }
 

src/main/java/stirling/software/SPDF/controller/api/security/GetInfoOnPDF.java

@@ -56,6 +56,8 @@ import org.apache.xmpbox.XMPMetadata;
 import org.apache.xmpbox.xml.DomXmpParser;
 import org.apache.xmpbox.xml.XmpParsingException;
 import org.apache.xmpbox.xml.XmpSerializer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ModelAttribute;
@@ -79,6 +81,8 @@ import stirling.software.SPDF.utils.WebResponseUtils;
 @Tag(name = "Security", description = "Security APIs")
 public class GetInfoOnPDF {
 
+    private static final Logger logger = LoggerFactory.getLogger(GetInfoOnPDF.class);
+
     static ObjectMapper objectMapper = new ObjectMapper();
 
     @PostMapping(consumes = "multipart/form-data", value = "/get-info-on-pdf")
@@ -220,7 +224,7 @@ public class GetInfoOnPDF {
                             javascriptArray.add(jsNode);
                         }
                     } catch (IOException e) {
-                        e.printStackTrace();
+                        logger.error("exception", e);
                     }
                 }
             }
@@ -253,7 +257,7 @@ public class GetInfoOnPDF {
                 }
             } catch (Exception e) {
                 // TODO Auto-generated catch block
-                e.printStackTrace();
+                logger.error("exception", e);
             }
 
             boolean isPdfACompliant = checkForStandard(pdfBoxDoc, "PDF/A");
@@ -305,7 +309,7 @@ public class GetInfoOnPDF {
                     new XmpSerializer().serialize(xmpMeta, os, true);
                     xmpString = new String(os.toByteArray(), StandardCharsets.UTF_8);
                 } catch (XmpParsingException | IOException e) {
-                    e.printStackTrace();
+                    logger.error("exception", e);
                 }
             }
 
@@ -593,7 +597,7 @@ public class GetInfoOnPDF {
                     MediaType.APPLICATION_JSON);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            logger.error("exception", e);
         }
         return null;
     }
@@ -691,7 +695,7 @@ public class GetInfoOnPDF {
                 Exception
                         e) { // Catching general exception for brevity, ideally you'd catch specific
             // exceptions.
-            e.printStackTrace();
+            logger.error("exception", e);
         }
 
         return false;

src/main/java/stirling/software/SPDF/controller/api/security/RemoveCertSignController.java

@@ -0,0 +1,81 @@
+package stirling.software.SPDF.controller.api.security;
+
+import java.io.ByteArrayOutputStream;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.apache.pdfbox.Loader;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.github.pixee.security.Filenames;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import stirling.software.SPDF.model.api.PDFFile;
+import stirling.software.SPDF.utils.WebResponseUtils;
+
+@RestController
+@RequestMapping("/api/v1/security")
+@Tag(name = "Security", description = "Security APIs")
+public class RemoveCertSignController {
+
+    private static final Logger logger = LoggerFactory.getLogger(RemoveCertSignController.class);
+
+    @PostMapping(consumes = "multipart/form-data", value = "/remove-cert-sign")
+    @Operation(
+            summary = "Remove digital signature from PDF",
+            description =
+                    "This endpoint accepts a PDF file and returns the PDF file without the digital signature. Input: PDF, Output: PDF")
+    public ResponseEntity<byte[]> removeCertSignPDF(@ModelAttribute PDFFile request)
+            throws Exception {
+        MultipartFile pdf = request.getFileInput();
+
+        // Convert MultipartFile to byte[]
+        byte[] pdfBytes = pdf.getBytes();
+
+        // Create a ByteArrayOutputStream to hold the resulting PDF
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+        // Load the PDF document
+        PDDocument document = Loader.loadPDF(pdfBytes);
+
+        // Get the document catalog
+        PDDocumentCatalog catalog = document.getDocumentCatalog();
+
+        // Get the AcroForm
+        PDAcroForm acroForm = catalog.getAcroForm();
+        if (acroForm != null) {
+            // Remove signature fields safely
+            List<PDField> fieldsToRemove =
+                    acroForm.getFields().stream()
+                            .filter(field -> field instanceof PDSignatureField)
+                            .collect(Collectors.toList());
+
+            if (!fieldsToRemove.isEmpty()) {
+                acroForm.flatten(fieldsToRemove, false);
+            }
+        }
+
+        // Save the modified document to the ByteArrayOutputStream
+        document.save(baos);
+        document.close();
+
+        // Return the modified PDF as a response
+        return WebResponseUtils.boasToWebResponse(
+                baos,
+                Filenames.toSimpleFileName(pdf.getOriginalFilename()).replaceFirst("[.][^.]+$", "")
+                        + "_unsigned.pdf");
+    }
+}

src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java

@@ -150,10 +150,10 @@ public class WatermarkController {
             try (InputStream is = classPathResource.getInputStream();
                     FileOutputStream os = new FileOutputStream(tempFile)) {
                 IOUtils.copy(is, os);
+                font = PDType0Font.load(document, tempFile);
+            } finally {
+                if (tempFile != null) Files.deleteIfExists(tempFile.toPath());
             }
-
-            font = PDType0Font.load(document, tempFile);
-            tempFile.deleteOnExit();
         }
 
         contentStream.setFont(font, fontSize);

src/main/java/stirling/software/SPDF/controller/api/strippers/PDFTableStripper.java

@@ -117,7 +117,6 @@ public class PDFTableStripper extends PDFTextStripper {
     /**
      * Instantiate a new PDFTableStripper object.
      *
-     * @param document
      * @throws IOException If there is an error loading the properties.
      */
     public PDFTableStripper() throws IOException {