Free Chrome & Firefox extension
Press a keyboard shortcut, hover over any YouTube thumbnail, and get an AI-generated summary instantly. Stop wasting time on videos that don't deliver.
Free forever · No account required · No data collected
Hit Ctrl+Shift+X (or Cmd+Shift+X on Mac). Your cursor turns into a crosshair — you're armed.
Click on any YouTube video thumbnail. Prewatchr fetches the transcript in the background.
A concise AI summary streams word-by-word. Decide in seconds if it's worth your time.
Results appear word-by-word like ChatGPT — no waiting for a full response to load.
Works on videos in any language. Summaries are always in English for clarity.
Copy the full summary to your clipboard instantly — great for research and note-taking.
Popular videos are cached for 24 hours. Second request is nearly instant.
One extension, both major browsers. Install once, works everywhere you watch YouTube.
Track how many summaries you've generated and how much watch time you've saved.
No account requiredInstall and use immediately. We never ask for your email.
No browsing history storedVideo URLs are processed in real-time and immediately discarded.
Local stats onlyYour usage count stays in your browser. It never leaves your device.
HTTPS encryptedAll communication between the extension and our server is encrypted.
Read our full Privacy Policy →
It's free, takes 30 seconds to install, and you'll wonder how you browsed YouTube without it.