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Preview of Subucha - Dual Subtitles for YouTube

Subucha - Dual Subtitles for YouTube by Subucha.cc

Learn a language while you watch YouTube: two captions at once, matched word by word and highlighted as they're spoken. Other helpful tools included.

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Available on Firefox for Android™Available on Firefox for Android™
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Extension Metadata

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Subucha.cc running in a Firefox browser.
About this extension
Subucha shows two languages on any captioned YouTube video at once: the one you're learning and the one you already know. As the video plays, each spoken word and its translation highlight together, so you can see exactly which word means what.

YouTube translates whole captions and Subucha matches the words, so you can follow along and learn vocabulary in context.

WHY INSTALL IT

• Turn videos you already watch into language practice.
• Read along in your own language without leaving YouTube.
• See the word being spoken and its meaning at the same time.
• Click any word for a definition and pronunciation (Premium).
• Choose from several caption layouts, including paired captions and a scrolling word-by-word view.
• Your languages and layout are saved between visits.

GET STARTED

Sign in with Google, open a captioned video, and click Subucha beside CC. Choose the language you're learning and the one you already know, then turn on CC.

FREE TO USE

Sign up with your Google account right now and use it for free with 20 bonus videos on sign up, and then usage resets everyday after that for 12 free videos a day (forever).

If you want more quota, Basic is $2/month (billed $6 every three months) and Premium is $5/month. Subscriptions renew until canceled; subscribe at https://subucha.cc/pricing/.

GOOD TO KNOW

• A Google account is required.
• The video needs captions that YouTube can translate.
• The extension has multiple themes for dual captions for your liking.
• Live streams and embedded players aren't supported.
• Not affiliated with YouTube or Google. YouTube is a trademark of Google LLC.

https://subucha.cc/blog/why-we-built-subucha/

Privacy policy: https://subucha.cc/privacy/
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Permissions and data

Required permissions:

  • Access your data for www.youtube.com
  • Access your data for m.youtube.com
  • Access your data for subucha.cc
  • Access your data for www.subucha.cc
  • Access your data for api.subucha.cc

Required data collection, according to the developer:

  • Authentication information
  • Browsing activity
  • Personally identifying information
  • Website content
Learn more
More information
Add-on Links
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Version
0.1.36
Size
354.1 KB
Last updated
16 days ago (Oct 28, 2026)
Related Categories
  • Language Support
  • Photos, Music & Videos
  • Social & Communication
License
All Rights Reserved
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • social media
  • youtube
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Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version. Android is a trademark of Google LLC.