Update: Real-Time Video Fact-Checking Extension
userpostingcontent · reddit · 2026-07-18
The author updated the browser extension PopUpFactCheck, which pops up real-time fact-checking bubbles while watching YouTube videos. The highly requested Firefox version is now live, and the Chrome extension has added more controls and review capabilities.
This update includes:
- Firefox add-on released
- Use arrow keys to review past fact-check bubbles
- Improved fact-checking for live videos
- New batch reporting for entire videos
The author notes heavy use of Claude Code during development; the orchestration layer uses OpenAI GPT-5.4 nano / mini, integrating various sources like news, public health, and social/web search. Links to the Chrome Web Store, Firefox Add-on, and official website are included.
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