Education & Reference
YuzuLingo
Last updated 2026-09-30 · benchmark measured 2026-09-30 — deterministic & reproducible
Browser extension for looking up and mining burned-in subtitles while watching video.
YuzuLingo at a glance
YuzuLingo is a browser extension that lets language learners look up and save words from hardcoded (burned-in) video subtitles on YouTube, Bilibili, and other web players.
Good for
- Watching foreign-language videos with hardcoded subtitles and looking up unfamiliar words on the fly
- Building Anki flashcards directly from subtitle text while watching a show
- Practicing listening comprehension by blurring or covering the subtitle area until needed
Questions people ask
Does YuzuLingo work with soft-subtitle tracks?
No, it is designed to read hardcoded (burned-in) subtitles and does not require any soft-subtitle track.
Do I need to create an account to use YuzuLingo?
No, YuzuLingo runs entirely in the browser and does not require a user account.
Can I turn word lookups into Anki flashcards?
Yes, hovering over a word gives a definition and reading, and you can export it to Anki with one click.
What video platforms does YuzuLingo support?
It works on YouTube, Bilibili, and other open web video players.
Is my video data sent to a server for text recognition?
No, the OCR processing used to read the subtitles happens entirely in your browser.
Written by Legit.Show from yuzulingo.com on 2026-10-01. It does not change the score.
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To cite this score: legit.show/s/yuzulingo-com/2026-09-30. That address never changes; this page moves with every re-measure.
Legit.Show scored YuzuLingo 82/100 on 2026-09-30, measured across all 7 frames from its public surface. legit.show/s/yuzulingo-com/2026-09-30
Is YuzuLingo production-ready?
Legit.Show scores YuzuLingo 82 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on YuzuLingo (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 59/100
- Accessibility — 96/100
- Security — 45/100How this compares across the catalogue: The Web Security Baseline
- Privacy — 100/100How this compares across the catalogue: The Privacy Gap
- Reliability — 100/100
- Standards — 89/100
- Discoverability — 85/100
What we measured
- Security headers present: HSTS.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 285 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who built it
product account @yuzulingo
Who it's for
Language learners · Video content consumers · Anki users · Immersion learning enthusiasts · CJK language students
Sources and updates
- Description
- Taken from yuzulingo.com's own website on 2026-09-30.
- Operator
- YuzuLingo, as named in yuzulingo.com's terms, privacy page or footer.
- Benchmark
- Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-30.
Put together from public information, without YuzuLingo's involvement. If anything here is wrong, tell us and a person will check it.
Visit YuzuLingo → · Alternatives to YuzuLingo → · How this was measured →