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Preview of SelectTranslate - Translate Webpage & Document

SelectTranslate - Translate Webpage & Document by SelectTranslate

A free AI translation extension for bilingual translation of websites, PDFs, EPUB eBooks, and video subtitles.

Available on Firefox for Android™Available on Firefox for Android™
5 (1 review)5 (1 review)
13 Users13 Users
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About this extension
🎉 The "AI Experts" and "Termbases" features are now live! They include multiple built‑in experts and termbases, and also support custom experts and terms, making translations in specialized fields more accurate and professional. 👍👍👍

🥇 The industry’s first Optimal Translation:
It runs multiple translation models in parallel and uses an intelligent scoring model to evaluate their outputs and select the best one, significantly improving translation accuracy and reliability. That’s where the name SelectTranslate comes from. ✅

🌐 Bilingual Webpage Translation:
Intelligently recognize and translate web page content, display the translation after the original paragraph, and achieve bilingual reading. Supports translation between more than 100 languages, helping you access global knowledge without barriers.

📄 PDF Bilingual Translation:
Completely free PDF translation feature, offers rapid translation of foreign language documents while preserving the original document format and layout. It features bilingual side-by-side translation to meet your daily PDF document translation and reading needs.

📕 PDF Plus:
The advanced PDF translation feature is designed specifically for translating academic papers and various professional PDF documents. Utilizing advanced multimodal AI + OCR vision processing technology, it accurately recognizes complex content such as text, formulas, images, and tables, effectively addressing issues of layout disorder and inaccurate translation.

📖 ePub e-Book Translation:
It can easily convert various foreign language ePub eBooks into bilingual versions, which are perfectly compatible with various e-book readers such as Kindle, helping you break down language barriers and enjoy high-quality global literary resources.

📚 More document translation features:
It also supports the translation of files in formats such as DOCX, TXT, HTML, Markdown, and subtitle files (SRT/ASS).

📺 Video Subtitle Translation:
Supports bilingual subtitle translation on major global streaming platforms such as YouTube, Netflix, Disney+, TED, Bilibili and Prime Video, allowing you to enjoy content in its original context with ease.

👩‍💻 Online Meeting Translation:
Supports real‑time translation in Zoom, Microsoft Teams, and Google Meet — including chat translation, input translation, and subtitle translation — to make cross‑language communication smoother and more efficient.

⌨️ Input Translation:
Enter text in any webpage input field and translate it with one click, allowing you to write, reply, and communicate across languages using your native language. Single‑model translation is fast and efficient, while multi‑model optimal translation delivers greater accuracy and reliability.

🆃 Selection Translation:
Select any word or text to trigger an instant pop‑up translation. It provides part of speech, phonetics, pronunciation, and example sentences, and also offers more accurate interpretations by taking the surrounding context into account.

🖱️ Mouse Hover Translation:
Hover over any text paragraph on the webpage while pressing the shortcut key, and the corresponding translation will be displayed immediately after the original paragraph. Bilingual comparison and on-demand translation help you learn foreign languages more flexibly and efficiently.

👩‍🎓 AI Experts:
These are AI translation prompts customized for different industries. They define specialized roles and translation rules, enabling a deeper understanding of industry‑specific content contexts and terminology, and significantly improving translation quality.

🗂️ Termbases:
Used to store and manage the standard translations of professional terms in different scenarios, ensuring accuracy and consistency in terminology translation.

🪩 20+ Translation Services/Models Integrated:
Gemini, DeepSeek, OpenAI, Qwen, Google Translate, and more.

📩 Service and Support:
If you encounter any issues or have suggestions during use, please feel free to contact our service email for feedback.
Email address:service@selecttranslate.com

🎯 SelectTranslate’s mission is to enable everyone to read without barriers and to work and communicate across languages using their native language, advancing information equality and making native‑language freedom a reality.
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Permissions and data

Required permissions:

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

Optional permissions:

  • Access your data for all websites

Required data collection, according to the developer:

  • Browsing activity
  • Website activity
  • Website content

Optional data collection, according to the developer:

  • Technical and interaction data
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Add-on Links
  • Homepage
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Version
2.4.1
Size
4.98 MB
Last updated
6 hours ago (Feb 9, 2026)
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  • translate
  • twitter
  • youtube
  • zoom
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