Learn languages on YouTube & Netflix with dual subtitles that teach.
Click any word in a video for an instant translation, native pronunciation, and an AI grammar breakdown — then lock it in with smart flashcards.
↑ This is interactive — switch platforms and click a highlighted word.
Turn passive watching into active learning
Subtitles, translation, pronunciation, grammar, and review — without leaving your video.
Dual subtitles, YouTube + Netflix
Two languages on screen at once. Our matched-mode anti-drift keeps Netflix and YouTube lines pinned to the original — no more sliding subtitles.
Contextual click-to-translate
Tap any word for a context-aware translation that reads the whole sentence — the precise meaning in this phrase, not a dictionary dump.
Pronunciation & IPA
Hear native audio and read IPA, Pinyin or Romaji on every word. No other extension ships phonetic transcription for free.
Smart flashcards (FSRS)
Saved words become a deck automatically — scheduled by the modern FSRS algorithm. Zero manual entry, zero Anki setup.
Save with media
Every word is saved with a screenshot from the video and the subtitle audio clip. Visual context makes memory stick ~3× better.
AI Grammar Explanation
Ask why a sentence is built the way it is. Level-aware breakdowns aligned to CEFR, JLPT, HSK and TOPIK — your private grammar tutor.
Understand the grammar, not just the words
Translation tells you what. Linglass tells you why. One tap breaks down the construction in the exact sentence you're watching — tense, particles, word order, agreement — at your level.
- Explains the real sentence on screen, with the key constructions highlighted
- Calibrated to your level — A1 to C2, plus JLPT / HSK / TOPIK
- Built right into the popup — one tap, no tab-switching, no dictionaries
Anime, K-dramas, Netflix originals, YouTube
Japanese with anime
Chinese with C-dramas
Spanish on Netflix
Korean with K-dramas
French on YouTube
German with talks
Italian with film
English everywhereJapanese with animeChinese with C-dramasSpanish on NetflixKorean with K-dramasFrench on YouTubeGerman with talksItalian with filmEnglish everywhereLinglass is now on your iPhone
Dual subtitles, click-to-translate and your saved words — now on iPhone. Scan the code to install; Android is coming soon.
Free forever. Premium when you're ready.
Everything you need to learn is free with no time limit. Upgrade only when you want unlimited.
- Dual subtitles on YouTube & Netflix
- 15 contextual translations / day
- Unlimited saved words + flashcards
- 5 AI grammar explanations / month
- Pronunciation & phonetic transcription
- Unlimited translationsFree plan — 15 per day
- AI grammar explanationsFree plan — 5 per month
- AI subtitlesSmart segmentation and AI translation
- New features firstAnd support Linglass's development
One-time payment, no auto-renewal.
Terms in the public offer | [email protected]
Your next video is your next lesson.
Ten seconds to install, and the video you were about to watch already has dual subtitles. Free forever, no card.
Get the Extension — it's free