On Device AI YouTube Summarizer — Summary Squirrel

About

Stop watching entire videos to find the parts that matter. Summary Squirrel instantly summarizes any YouTube video
   with clickable timestamps — so you can jump straight to the key moments.

  HOW IT WORKS
  1. Open any YouTube video
  2. Click the Summary Squirrel icon to open the side panel
  3. Pick your style: Key Points or Storyteller
  4. Hit Summarize and watch the AI break down the entire video

  FEATURES
  - AI-generated clickable timestamps — click any timestamp to jump directly to that moment in the video
  - Two summary styles: Key Points (facts, data, tools) and Storyteller (stories, metaphors, emotional moments)
  - Works on any length: 5-minute tutorials to 4-hour masterclasses
  - Ask questions about the video — type any question and get an instant answer based on the transcript
  - Copy summary to clipboard with one click
  - Share insights directly to X/Twitter
  - Works on videos with or without chapters

  YOUR VIDEO DATA STAYS ON YOUR DEVICE
  - AI runs locally on your computer using Chrome's built-in language model
  - Video transcripts are processed on-device — never sent to external servers
  - No account required
  - No cloud APIs, no subscriptions, no usage limits
  - Non-personalized ads help keep the extension free

  WORKS GREAT FOR
  - Podcasts and interviews
  - Lectures and educational content
  - Tech talks and conference videos
  - Motivational and storytelling content
  - Tutorials and how-to videos
  - News and commentary

  REQUIREMENTS
  - Chrome 131 or later
  - "Prompt API for Gemini Nano" enabled in chrome://flags
  - "Optimization Guide On Device" enabled with BypassPerfRequirement in chrome://flags