よむ by Henry Russell
Japanese popup dictionary, furigana, pitch accent, OCR, subtitles, and a study page.
Available on Firefox for Android™Available on Firefox for Android™
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About this extension
Read Japanese where you already read it.
よむ makes Japanese text, subtitles, and images tappable. Click or hover a word to see its reading, furigana, pitch accent, dictionary meanings, examples, and study status. It works on ordinary web pages, YouTube subtitles, manga and images through OCR, and local files when you allow file access.
You stay in control. Import Yomitan dictionaries for offline lookup, or connect Jiten, JPDB, Bunpro, and Anki when you want them. Choose how pages are handled: leave them unchanged, scan Japanese automatically, or scan only when you ask.
The extension also includes a focused study page for vocabulary and kanji review. Open Study from Yomu's toolbar whenever you want it. Yomu never replaces or redirects your browser's new-tab page. A fresh standalone Study session begins at Word, then continues through your chosen review sequence.
Highlights
Site access is needed because the extension's single purpose is to annotate Japanese wherever it appears. Page text is processed locally except when you explicitly use a lookup, OCR, or sync service that you configured.
よむ makes Japanese text, subtitles, and images tappable. Click or hover a word to see its reading, furigana, pitch accent, dictionary meanings, examples, and study status. It works on ordinary web pages, YouTube subtitles, manga and images through OCR, and local files when you allow file access.
You stay in control. Import Yomitan dictionaries for offline lookup, or connect Jiten, JPDB, Bunpro, and Anki when you want them. Choose how pages are handled: leave them unchanged, scan Japanese automatically, or scan only when you ask.
The extension also includes a focused study page for vocabulary and kanji review. Open Study from Yomu's toolbar whenever you want it. Yomu never replaces or redirects your browser's new-tab page. A fresh standalone Study session begins at Word, then continues through your chosen review sequence.
Highlights
- Furigana, pitch accent, and popup definitions on Japanese text
- Clickable subtitles and image OCR
- Offline Yomitan dictionary imports
- Optional Jiten, JPDB, Bunpro, and Anki integrations
- A study page for vocabulary and kanji review
- English and Japanese interface
- No remote executable code and no sale of personal data
Site access is needed because the extension's single purpose is to annotate Japanese wherever it appears. Page text is processed locally except when you explicitly use a lookup, OCR, or sync service that you configured.
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Permissions and data
Required permissions:
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Required data collection, according to the developer:
- Website content
Optional data collection, according to the developer:
- Authentication information
More information
- Add-on Links
- Version
- 1.6.241
- Size
- 2.1 MB
- Last updated
- 4 days ago (Jul 19, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection
The developer of this extension asks that you help support its continued development by making a small contribution.