Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Duo Translator - Translation & writing assistant

Duo Translator - Translation & writing assistant by linuxscreen

Supports webpage translation, selected text translation, writing enhancement, and more.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
An AI-powered translation and writing assistant. Supports webpage translation, selected text translation, writing enhancement, and more. Helps you access information more easily and break down language barriers.

💡 How to Start:
Click the extension icon to open the popup. You can pin the extension for quick access.

💻 Features:

🎯 Webpage Translation:
  1. Bilingual layout by default, helping you better understand the original content and improve your reading experience.
  2. Quickly translate and restore pages with the floating ball, keyboard shortcuts, or context menu.
  3. Detects the page language and translates it automatically.
  4. Customize the translation style, including background color, text color, border style, and border color.

🌟 Bilingual Highlighting:
  1. Highlights the original and translation sentence by sentence, helping you better understand long-form content and quickly identify complex, difficult, or mistranslated sentences.
  2. Simply hover over the original text or translation to trigger it.
  3. Customize the highlight style, including border style, border color, background color, and text color.

📌 Paragraph and Selection Translation:
  1. Quickly translate any paragraph without manually selecting the entire text.
  2. Selected Text Translation lets you listen to and quickly copy both the original text and the translation.
  3. Trigger it with a double-tap of Ctrl or Alt, a keyboard shortcut, or the context menu.

📝 AI Writing:
  1. Correct grammar, polish, translate, and more directly in input box.
  2. Enable whitelist mode to run it only on the websites you need.
  3. Open the dedicated AI workbench to edit long-form text and review the output more easily.

📦 Multiple Translation and AI Service Integrations:
  1. Built-in translation services include Microsoft, Google, and DeepL.
  2. Supports OpenAI, DeepSeek, Gemini, OpenRouter, Claude, Ollama, and custom AI providers.

🔍 Others:
  1. Sync your settings with WebDAV, or import and export them as local files.
  2. Privacy first. Duo Translator is free, open-source, and never collects your personal data.

🏅 Future Development:

More features are under development. If you have a good idea, please contact me. If you're interested in this project, feel free to become a contributor.

🚀 Support:

If you encounter any issues during use, please submit an issue on GitHub (https://github.com/linuxscreen/duo-translator) or contact us by email (support@duotranslator.com).
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access browser tabs
  • Access browser activity during navigation
  • Access your data for all websites

Required data collection, according to the developer:

  • Website content
Learn more
More information
Add-on Links
  • Support site
  • Support Email
  • Copy add-on ID
Version
2.0.0
Size
2.05 MB
Last updated
3 days ago (Jul 14, 2026)
Related Categories
  • Language Support
  • Social & Communication
License
GNU General Public License v3.0 only
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.