Captionz Extension

Captionz is the companion extension for Captionz. It supercharges your language learning on YouTube by enabling dual subtitles, A-B repeating, and community notes.

Features

• Seamless Integration: Automatically syncs YouTube captions with the Captionz web app.
• Dual Subtitles: Watch YouTube videos with two subtitles simultaneously.
• Auto-Translate Support: Easily enable auto-translated captions for any language.
• Quick Access:
  • Adds a "Watch on Captionz" button directly to the YouTube video page.
  • Right-click any video link to open it in Captionz via the Context Menu.

Install

• Chrome: Chrome Web Store.
• Edge: Microsoft Edge Add-ons
• Firefox: Firefox Add-ons

Manual Installation

1. Download the source code.
2. Go to chrome://extensions/ in your browser.
3. Enable Developer mode (top right).
4. Click Load unpacked and select the extension folder.

Screenshots

Build

To pack the extension into a .zip file for distribution:

# Default (Chrome)
./pack.sh

# Firefox
BROWSER=Firefox ./pack.sh

# Edge
BROWSER=Edge ./pack.sh

Links

• Main App: pnl.dev/captionz
• Discord: Join our community

Privacy Policy

See here