Captionz: YouTube Dual Subtitles & A-B Repeat by River Young

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Captionz: YouTube Dual Subtitles & A-B Repeat version history - 2 versions

Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.0.1
Released Jan 17, 2026 - 25.6 KB
Works with firefox 109.0a1 and later
- Prompt when captions is not enabled on youtube
- Add mark on captionz site when it's installed.
Source code released under GNU General Public License v2.0 only
Download Firefox and get the extension
Download file
Older versions
Version 1.0
Released Jan 13, 2026 - 25.24 KB
Works with firefox 109.0a1 and later
Source code released under GNU General Public License v2.0 only
Download file

Latest version