hearsub
5|0 reviews|0 favorites
Introduction
HearSub is a Chrome extension for live YouTube subtitle translation, bilingual captions, and synchronized AI dubbing without uploading the full video.
Listed on
August 22, 2026
What is hearsub?
HearSub is a browser extension that provides real-time translation of YouTube subtitles and AI dubbing. It follows video playback to generate translated captions and natural-sounding dubbing in multiple languages, without requiring video downloads or full processing. The extension supports multi-speaker detection and preserves original background audio.
How to use hearsub?
- Install the HearSub extension from the Chrome Web Store or manually via CRX download. After installation, pin the extension to your browser toolbar. Open any YouTube video, and HearSub will automatically activate. Click the HearSub icon to select your source and target languages, then start watching with real-time translated captions and AI dubbing.
Core features of hearsub
- Real-time subtitle translation
- AI dubbing with natural voices
- Multi-speaker detection
- Bilingual captions
- Original background audio preservation
- 42 dubbing languages
- Works on YouTube with Chrome, Edge, and Brave
- Free with no daily usage cap
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