Argos Translate

Demo | Website | Docs | Forum | Video intro | GitHub

Open-source offline translation library written in Python

Argos Translate uses OpenNMT for translations, SentencePiece for tokenization, Stanza for sentence boundary detection, and PyQt for GUI. Argos Translate can be used as either a Python library, command-line, or GUI application. LibreTranslate is an API and web-app built on top of Argos Translate.

Argos Translate supports installing language model packages which are zip archives with a ".argosmodel" extension with the data needed for translation.

Argos Translate also manages automatically pivoting through intermediate languages to translate between languages that don't have a direct translation between them installed. For example, if you have a es → en and en → fr translation installed you are able to translate from es → fr as if you had that translation installed. This allows for translating between a wide variety of languages at the cost of some loss of translation quality.

Supported languages

Arabic, Azerbaijani, Chinese, Czech, Danish, Dutch, English, Esperanto, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Irish, Italian, Japanese, Korean, Persian, Polish, Portuguese, Russian, Slovak, Spanish, Swedish, Turkish, Ukrainian, Vietnamese

• Request a language

Installation

Install from PyPI

Argos Translate is available from PyPI and can be easily installed or updated with pip.

pip3 install argostranslate

Install GUI:

pip3 install argostranslategui

Installation for macOS

1. Download the latest macOS release.
2. Extract the archive.
3. Copy the .app file to the Applications directory.

Python source installation

Download a copy of this repo and install with pip.

git clone https://github.com/argosopentech/argos-translate.git
cd argos-translate
pip install -e .

Examples

Python

import argostranslate.package, argostranslate.translate

from_code = "en"
to_code = "es"

# Download and install Argos Translate package
available_packages = argostranslate.package.get_available_packages()
available_package = list(
    filter(
        lambda x: x.from_code == from_code and x.to_code == to_code, available_packages
    )
)[0]
download_path = available_package.download()
argostranslate.package.install_from_path(download_path)

# Translate
installed_languages = argostranslate.translate.get_installed_languages()
from_lang = list(filter(
	lambda x: x.code == from_code,
	installed_languages))[0]
to_lang = list(filter(
	lambda x: x.code == to_code,
	installed_languages))[0]
translation = from_lang.get_translation(to_lang)
translatedText = translation.translate("Hello World!")
print(translatedText)
# '¡Hola Mundo!'

LibreTranslate Web App (Demo)

LibreTranslate API

const res = await fetch("https://translate.argosopentech.com/translate", {
	method: "POST",
	body: JSON.stringify({
		q: "Hello!",
		source: "en",
		target: "es"
	}),
	headers: {
		"Content-Type": "application/json"}
	});

console.log(await res.json());

{
    "translatedText": "¡Hola!"
}

Graphical user interface

The GUI code is in a separate repository.

Packages

• Browse
• P2P download (IPFS and BitTorrent)
• Training scripts
• Google Drive download

GPU Acceleration

To enable GPU support, you need to set the ARGOS_DEVICE_TYPE env variable to cuda or auto.

$ ARGOS_DEVICE_TYPE=cuda argos-translate --from-lang en --to-lang es "Hello World"
Hola Mundo

The above env variable instructs CTranslate2 to use cuda. if you encounter any issues with GPU inference please reference the CTranslate2 documentation.

HTML Translation

The translate-html library is built on top of Argos Translate and Beautiful Soup and parses and translates HTML. The LibreTranslate API also has support for translating HTML.

Files Translation

The argos-translate-files library is built on top of Argos Translate and parses and translates files. The LibreTranslate API also has support for translating files.

Uninstall

python3 -m pip uninstall argostranslate

You may choose to also delete temporary and cached files:

rm -r ~/.local/cache/argos-translate
rm -r ~/.local/share/argos-translate

Related Projects

• LibreTranslate-py - Python bindings for LibreTranslate
• machinetranslation.io - OpenNMT based translation and articles on machine translation
• LibreTranslate-rs - LibreTranslate Rust bindings
• LibreTranslate Go - LibreTranslate Golang bindings
• LibreTranslator - LibreTranslate Android app
• Lexicon - Translation API.

Contributing

Contributions are welcome! Available issues are on the GitHub issues page. Contributions of code, data, and pre-trained models can all be accepted.

Support

For support please use the LibreTranslate Forum or GitHub Issues.

For questions about CTranslate2 or general machine translation research the OpenNMT Forum is a good resource.

Services

Custom models trained on your own data are available for $1000/each (negotiable).

Managed LibreTranslate hosting is available for $1000/mo.

Donate

If you find this software useful donations are appreciated.

• GitHub Sponsor
• PayPal
• Bitcoin: 16UJrmSEGojFPaqjTGpuSMNhNRSsnspFJT
• Ethereum: argosopentech.eth
• Litecoin: MCwu7RRWeCRJdsv2bXGj2nnL1xYxDBvwW5
• Bitcoin cash: qzqklgjpgutdqqlhcasmdd2hkqcelw426sxzk5qtne
• Filecoin: f1nrnpmjxn27amidyiqrzq5mxihdo2trh2oijw2sq
• Basic Attention Token: 0x8a16f26D277f924B04FCA5ECec64b76B5410A06c

Paid supporters receive priority support.

You can also support the project by purchasing DigitalOcean hosting with the Argos Open Tech referral link which helps to offset CDN hosting costs.

License

Dual licensed under either the MIT License or Creative Commons CC0.