Osmolangue - Language Immersion & VOD Subtitles by Osmolangue
Master languages naturally while streaming. Dual bilingual subtitles, interactive word tokens, and instant vocabulary harvesting.
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About this extension
Turn every movie, anime, and YouTube video into an immersive native language lesson.
Osmolangue transforms your favorite streaming platforms into interactive language classrooms. Instead of passively reading translated subtitles, Osmolangue provides interactive dual-language subtitles where every single word is an explorable learning token. Click any word to instantly reveal its dictionary definition, IPA phonetic pronunciation, CEFR grammatical anatomy, and colloquial spoken variations.
KEY FEATURES:
- Interactive Dual-Language Subtitles: Watch with both original target audio subtitles and your native language translation simultaneously.
- Instant Click-to-Harvest Vocabulary: Click any unfamiliar word in the subtitle stream to view grammatical anatomy, CEFR difficulty level, and IPA pronunciation.
- Integrated Study Room & Web Dashboard: Every word or sentence you harvest syncs automatically to your personal Osmolangue Study Room for spaced repetition practice.
- Multi-Platform Streaming Support: Built for YouTube, European Broadcasters (France TV, ARD, ZDF), and Crunchyroll Anime.
- Supported Target Languages: French, German, Japanese, Spanish, English, and Indonesian.
Privacy First: Osmolangue operates locally within your active video tab, never tracks your cross-site browsing, and does not serve ads.
Osmolangue transforms your favorite streaming platforms into interactive language classrooms. Instead of passively reading translated subtitles, Osmolangue provides interactive dual-language subtitles where every single word is an explorable learning token. Click any word to instantly reveal its dictionary definition, IPA phonetic pronunciation, CEFR grammatical anatomy, and colloquial spoken variations.
KEY FEATURES:
- Interactive Dual-Language Subtitles: Watch with both original target audio subtitles and your native language translation simultaneously.
- Instant Click-to-Harvest Vocabulary: Click any unfamiliar word in the subtitle stream to view grammatical anatomy, CEFR difficulty level, and IPA pronunciation.
- Integrated Study Room & Web Dashboard: Every word or sentence you harvest syncs automatically to your personal Osmolangue Study Room for spaced repetition practice.
- Multi-Platform Streaming Support: Built for YouTube, European Broadcasters (France TV, ARD, ZDF), and Crunchyroll Anime.
- Supported Target Languages: French, German, Japanese, Spanish, English, and Indonesian.
Privacy First: Osmolangue operates locally within your active video tab, never tracks your cross-site browsing, and does not serve ads.
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Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.0.0
- Size
- 1.34 MB
- Last updated
- 7 days ago (Nov 5, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection