LinguaLens by LinguaLens
Reinforce vocabulary while you browse. LinguaLens swaps studied words into your target language inline on every page so reading becomes spaced-repetition practice. Anki and Skritter support, FSRS scheduling, and sentence-fragment-only privacy.
Available on Firefox for Android™Available on Firefox for Android™
Extension Metadata
About this extension
LinguaLens turns everyday reading into vocabulary practice. Words you have studied are swapped into your target language on webpages, with hover review controls and spaced repetition scheduling. Import from Anki or Skritter, start with a starter deck, or build your own as you read. Privacy-first: LinguaLens sends only short sentence fragments around studied words, never full pages, URLs, or browsing history.
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Permissions and data
Required permissions:
- Display notifications to you
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Required data collection, according to the developer:
- Authentication information
- Personally identifying information
- Website activity
- Website content
More information
- Add-on Links
- Version
- 1.0.1
- Size
- 16.25 MB
- Last updated
- 2 days ago (May 19, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection