FluentRead
Closer languages. A bigger world.
An open-source browser extension for bilingual translation.
Install · Website · User guide · Sponsorship · Privacy policy · 简体中文 · LINUX DO Community · GPL-3.0
FluentRead displays translations alongside the original webpage and provides selection translation, AI reading assistance, image and document translation, and bilingual video subtitles. Its reading card provides contextual explanations and follow-up questions.
▶ Watch the 56-second introduction
For a closer look, watch the full official introduction (4+ minutes, in Chinese on Bilibili).
Features
| Feature | Description |
|---|
| Webpage translation | Bilingual page translation, hover and selection translation, original-text restoration, and automatic translation rules. |
| AI reading card | Meaning, sentence analysis, usage explanations, and practice, with paragraph context and follow-up questions. |
| Learning center | Save words, phrases, and sentences with their original context for study and review. |
| Image and area translation | Recognize text in webpage images or selected screen areas and display translations that can be copied. |
| Document translation | Read PDF, ePub, DOCX, and other supported formats in two languages, edit translations, and export files. |
| Video subtitles | Bilingual subtitles on YouTube and X; supported X videos can also use local AI transcription. |
| Services and settings | Free translation services, DeepL, AI providers, and local Ollama models, with glossaries, translation styles, shortcuts, and menu layout settings. |
See the user guide for instructions and supported formats. AI explanations require a configured AI service. Third-party pricing and availability depend on the provider.
Installation
Chrome · Edge · Firefox · Userscript
- Install the extension and refresh the webpage.
- Open FluentRead and select a target language. The source language defaults to automatic detection and can also be selected manually.
- Choose “Translate page.” Enable selection translation and other tools in settings as needed.
Store updates may arrive at different times. The userscript provides core webpage translation features. See the installation guide for browser and feature availability.
Sponsorship
The project is currently funded mainly out of pocket, with a few hundred US dollars spent each month on maintenance. We believe FluentRead can make the world a little better.
Thank you to bilibili Index-Translate for becoming FluentRead’s first sponsor.
Become a sponsor · Email us · Add on WeChat
Local development
Use the Node.js version in .nvmrc to match CI. Run pnpm through Corepack to use the version pinned in package.json even when your shell has an older global pnpm.
nvm install
corepack pnpm install --frozen-lockfile
corepack pnpm dev starts local development.corepack pnpm zip builds and packages the Chrome extension.
Other browsers · Firefox source review
Contributing
Report bugs and propose changes through Issues. Pull requests for code, documentation, interface translations, and website adaptation are welcome.
Support
FluentRead is an open-source project whose continued development is made possible by the generous support of its community. Voluntary contributions are welcome through either service.
Acknowledgments
FluentRead grows alongside a vibrant open-source community. We are grateful to the following projects and their contributors for their openness and generosity:
Thank you to everyone who has contributed to FluentRead, including the many we couldn't name here, and to every user for embracing a product that is still far from perfect. We hope to keep building together with you, and to bring a little more good into the world.
License and privacy
FluentRead is released under GPL-3.0. See third-party notices for component attribution and licenses.
Settings and learning records stay local by default; cloud translation uses your selected provider. Optional cloud configuration backup supports Google Drive and WebDAV, including service credentials while excluding wordbooks, conversations, and usage statistics. See the privacy policy for permissions, encryption, and deletion details.
