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Bergamot Translator

browser.mt

Free plan APIBrowser extension
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Spec score 8.7 #14 of 156 in Translation Software

Spec sheet

What it does
Bergamot implements machine translation locally in a web browser.Read 12 Oct 2026 · browser.mt
Purpose
Bergamot develops client-side machine translation software for web browsers.Read 12 Oct 2026 · browser.mt
Free plan
YesRead 22 Sep 2026 · github.com
Privacy
The project says translated text is never sent to a third party.Read 12 Oct 2026 · browser.mt
Support
The project recommends providing feedback through the extension or filing issues against its repository on GitHub.Read 12 Oct 2026 · browser.mt
License
The Firefox extension is listed under the Mozilla Public License 2.0.Read 12 Oct 2026 · addons.mozilla.org
API access
YesRead 22 Sep 2026 · github.com
Browser extension
The project identifies TranslateLocally for Firefox as the easiest way to use Bergamot translation software.Read 12 Oct 2026 · browser.mt
Consortium
The project consortium is coordinated by the University of Edinburgh and includes Charles University, the University of Sheffield, the University of Tartu, and Mozilla.Read 12 Oct 2026 · browser.mt
Desktop integration
The extension works without the TranslateLocally desktop application and can share language models with it for faster translation when installed.Read 12 Oct 2026 · addons.mozilla.org
Developer resources
The project publishes open-source software libraries and training utilities for developers and researchers.Read 12 Oct 2026 · browser.mt
Developer software
The project lists a Marian machine translation server with a REST API, training utilities, and open-source libraries.Read 12 Oct 2026 · browser.mt
Extension features
TranslateLocally for Firefox can translate all text on a website, selected text, and text entered in forms.Read 12 Oct 2026 · addons.mozilla.org
Extension permissions
The Firefox listing says the extension requires access to browser tabs, data for all websites, and message exchange with programs outside Firefox.Read 12 Oct 2026 · addons.mozilla.org
Extension status
The listing gives version 0.8.2 and says it was last updated November 24, 2022.Read 12 Oct 2026 · addons.mozilla.org
Funding
The project says it received funding from the European Union Horizon 2020 programme under grant agreement No. 825303.Read 12 Oct 2026 · browser.mt
Integration
The Firefox extension works on its own and can integrate with the TranslateLocally desktop application for custom models and better performance.Read 12 Oct 2026 · addons.mozilla.org
Languages
The site lists Bulgarian, Czech, English, Estonian, French, Polish, and Spanish, plus limited Icelandic and Norwegian to English support.Read 12 Oct 2026 · browser.mt
Local processing
Translation runs locally using machine learning optimized for consumer hardware.Read 12 Oct 2026 · browser.mt
Local translation
Translation runs locally using machine learning optimized for consumer hardware.Read 12 Oct 2026 · browser.mt
Offline use
The extension listing says translation works with a bad or absent internet connection.Read 12 Oct 2026 · addons.mozilla.org
Page translation
The Firefox extension can translate all text on a website, including dynamic sites such as YouTube and Twitter.Read 12 Oct 2026 · addons.mozilla.org
Selected text and forms
The extension supports translating selected text and helping translate text in form fields.Read 12 Oct 2026 · addons.mozilla.org
Software tools
The software page lists a recipe for training translation systems, a Marian machine-translation server with a REST API, and Ptakopět for quality estimation and outbound translation.Read 12 Oct 2026 · browser.mt
Website translation
YesRead 22 Sep 2026 · github.com

Plans and prices

Bergamot client-side translation software Free Free client-side translation software; Firefox web extension Read 12 Oct 2026 · browser.mt

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