Argos Translate

Open-source offline translation library written in Python

Argos Translate uses OpenNMT for translations and can be used as either a Python library, command-line, or GUI application. Argos Translate supports installing language model packages which are zip archives with a ".argosmodel" extension containing the data needed for translation. LibreTranslate is an API and web-app built on top of Argos Translate.

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

Request a language

Installation

Install with Python

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

pip install argostranslate

Install GUI:

pip install argostranslategui

Python source installation into virtualenv

Download a copy of this repo and install with pip.

git clone https://github.com/argosopentech/argos-translate.git
cd argos-translate
virtualenv env
source env/bin/activate
pip install -e .

Examples

Python

import argostranslate.package
import argostranslate.translate

from_code = "en"
to_code = "es"

# Download and install Argos Translate package
argostranslate.package.update_package_index()
available_packages = argostranslate.package.get_available_packages()
package_to_install = next(
    filter(
        lambda x: x.from_code == from_code and x.to_code == to_code, available_packages
    )
)
argostranslate.package.install_from_path(package_to_install.download())

# Translate
translatedText = argostranslate.translate.translate("Hello World", from_code, to_code)
print(translatedText)
# '¡Hola Mundo!'

Command Line Interface

argospm update
argospm install translate-en_de
argos-translate --from en --to de "Hello World!"
# Hallo Welt!

Install all translation packages:

argospm install translate

LibreTranslate Web App (Demo)

Web App Screenshot

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.

Screenshot Screenshot2

Packages

Browse
P2P download with 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 passes the device type to CTranslate2.

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

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
MetalTranslate - Customizable translation in C++
LibreTranslate/Locomotive - Toolkit for training/converting LibreTranslate compatible language models ?
DesktopTranslator - OpenNMT based translation application
LibreTranslate-rs - LibreTranslate Rust bindings
LibreTranslate Go - LibreTranslate Golang bindings
LibreTranslate Java - LibreTranslate Java bindings
LibreTranslator - LibreTranslate Android app
LiTranslate - iOS LibreTranslate client