mirror of
https://github.com/LibreTranslate/LibreTranslate.git
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229 lines
8.3 KiB
Markdown
229 lines
8.3 KiB
Markdown
# LibreTranslate
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[Try it online!](https://libretranslate.com) | [API Docs](https://libretranslate.com/docs)
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[](https://pypi.org/project/libretranslate) [](https://github.com/uav4geo/LibreTranslate/actions?query=workflow%3A%22Run+tests%22) [](https://hub.docker.com/r/libretranslate/libretranslate) [](https://github.com/uav4geo/LibreTranslate/actions?query=workflow%3A%22Publish+to+GitHub+Container+Registry%22)
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Free and Open Source Machine Translation API, entirely self-hosted. Unlike other APIs, it doesn't rely on proprietary providers such as Google or Azure to perform translations.
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[Try it online!](https://libretranslate.com) | [API Docs](https://libretranslate.com/docs)
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## API Examples
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Request:
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```javascript
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const res = await fetch("https://libretranslate.com/translate", {
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method: "POST",
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body: JSON.stringify({
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q: "Hello!",
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source: "en",
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target: "es"
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}),
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headers: { "Content-Type": "application/json" }
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});
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console.log(await res.json());
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```
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Response:
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```javascript
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{
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"translatedText": "¡Hola!"
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}
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```
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## Install and Run
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You can run your own API server in just a few lines of setup!
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Make sure you have installed Python (3.8 or higher is recommended), then simply issue:
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```bash
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pip install libretranslate
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libretranslate [args]
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```
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Then open a web browser to http://localhost:5000
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If you're on Windows, we recommend you [Run with Docker](#run-with-docker) instead.
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## Build and Run
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If you want to make some changes to the code, you can build from source, and run the API:
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```bash
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git clone https://github.com/uav4geo/LibreTranslate
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cd LibreTranslate
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pip install -e .
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libretranslate [args]
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# Or
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python main.py [args]
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```
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Then open a web browser to http://localhost:5000
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### Run with Docker
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Simply run:
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```bash
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docker run -ti --rm -p 5000:5000 libretranslate/libretranslate
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```
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Then open a web browser to http://localhost:5000
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### Build with Docker
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```bash
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docker build [--build-arg with_models=true] -t libretranslate .
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```
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If you want to run the Docker image in a complete offline environment, you need to add the `--build-arg with_models=true` parameter. Then the language models get downloaded during the build process of the image. Otherwise these models get downloaded on the first run of the image/container.
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Run the built image:
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```bash
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docker run -it -p 5000:5000 libretranslate [args]
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```
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Or build and run using `docker-compose`:
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```bash
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docker-compose up -d --build
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```
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> Feel free to change the [`docker-compose.yml`](https://github.com/uav4geo/LibreTranslate/blob/main/docker-compose.yml) file to adapt it to your deployment needs, or use an extra `docker-compose.prod.yml` file for your deployment configuration.
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## Arguments
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| Argument | Description | Default |
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| ------------- | ------------------------------ | -------------------- |
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| --host | Set host to bind the server to | `127.0.0.1` |
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| --port | Set port to bind the server to | `5000` |
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| --char-limit | Set character limit | `No limit` |
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| --req-limit | Set maximum number of requests per minute per client | `No limit` |
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| --batch-limit | Set maximum number of texts to translate in a batch request | `No limit` |
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| --ga-id | Enable Google Analytics on the API client page by providing an ID | `No tracking` |
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| --debug | Enable debug environment | `False` |
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| --ssl | Whether to enable SSL | `False` |
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| --frontend-language-source | Set frontend default language - source | `en` |
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| --frontend-language-target | Set frontend default language - target | `es` |
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| --frontend-timeout | Set frontend translation timeout | `500` |
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| --offline | Run user-interface entirely offline (don't use internet CDNs) | `false` |
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| --api-keys | Enable API keys database for per-user rate limits lookup | `Don't use API keys` |
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## Manage API Keys
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LibreTranslate supports per-user limit quotas, e.g. you can issue API keys to users so that they can enjoy higher requests limits per minute (if you also set `--req-limit`). By default all users are rate-limited based on `--req-limit`, but passing an optional `api_key` parameter to the REST endpoints allows a user to enjoy higher request limits.
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To use API keys simply start LibreTranslate with the `--api-keys` option.
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### Add New Keys
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To issue a new API key with 120 requests per minute limits:
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```bash
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ltmanage keys add 120
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```
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### Remove Keys
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```bash
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ltmanage keys remove <api-key>
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```
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### View Keys
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```bash
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ltmanage keys
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```
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## Language Bindings
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You can use the LibreTranslate API using the following bindings:
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- Rust: https://github.com/DefunctLizard/libretranslate-rs
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- Node.js: https://github.com/franciscop/translate
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- .Net: https://github.com/sigaloid/LibreTranslate.Net
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More coming soon!
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## Roadmap
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Help us by opening a pull request!
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- [x] A docker image (thanks [@vemonet](https://github.com/vemonet) !)
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- [x] Auto-detect input language (thanks [@vemonet](https://github.com/vemonet) !)
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- [X] User authentication / tokens
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- [ ] Language bindings for every computer language
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## FAQ
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### Can I use your API server at libretranslate.com for my application in production?
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The API on libretranslate.com should be used for testing, personal or infrequent use. If you're going to run an application in production, please [get in touch](https://uav4geo.com/contact) to get an API key or discuss other options.
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### Can I use this behind a reverse proxy, like Apache2?
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Yes, here is an example Apache2 config that redirects a subdomain (with HTTPS certificate) to LibreTranslate running on a docker at localhost.
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```
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sudo docker run -ti --rm -p 127.0.0.1:5000:5000 libretranslate/libretranslate
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```
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You can remove `127.0.0.1` on the above command if you want to be able to access it from `domain.tld:5000`, in addition to `subdomain.domain.tld` (this can be helpful to determine if there is an issue with Apache2 or the docker container).
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Add `--restart unless-stopped` if you want this docker to start on boot, unless manually stopped.
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<details>
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<summary>Apache config</summary>
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<br>
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Replace [YOUR_DOMAIN] with your full domain; for example, `translate.domain.tld` or `libretranslate.domain.tld`.
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Remove `#` on the ErrorLog and CustomLog lines to log requests.
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```ApacheConf
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#Libretranslate
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#Redirect http to https
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<VirtualHost *:80>
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ServerName http://[YOUR_DOMAIN]
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Redirect / https://[YOUR_DOMAIN]
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# ErrorLog ${APACHE_LOG_DIR}/error.log
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# CustomLog ${APACHE_LOG_DIR}/tr-access.log combined
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</VirtualHost>
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#https
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<VirtualHost *:443>
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ServerName https://[YOUR_DOMAIN]
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ProxyPass / http://127.0.0.1:5000/
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ProxyPassReverse / http://127.0.0.1:5000/
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SSLEngine on
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SSLCertificateFile /etc/letsencrypt/live/[YOUR_DOMAIN]/fullchain.pem
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SSLCertificateKeyFile /etc/letsencrypt/live/[YOUR_DOMAIN]/privkey.pem
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SSLCertificateChainFile /etc/letsencrypt/live/[YOUR_DOMAIN]/fullchain.pem
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# ErrorLog ${APACHE_LOG_DIR}/tr-error.log
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# CustomLog ${APACHE_LOG_DIR}/tr-access.log combined
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</VirtualHost>
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```
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Add this to an existing site config, or a new file in `/etc/apache2/sites-available/new-site.conf` and run `sudo a2ensite new-site.conf`.
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To get a HTTPS subdomain certificate, install `certbot` (snap), run `sudo certbot certonly --manual --preferred-challenges dns` and enter your information (with `subdomain.domain.tld` as the domain). Add a DNS TXT record with your domain registrar when asked. This will save your certificate and key to `/etc/letsencrypt/live/{subdomain.domain.tld}/`. Alternatively, comment the SSL lines out if you don't want to use HTTPS.
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</details>
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## Credits
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This work is largely possible thanks to [Argos Translate](https://github.com/argosopentech/argos-translate), which powers the translation engine.
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## License
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[GNU Affero General Public License v3](https://www.gnu.org/licenses/agpl-3.0.en.html)
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