YouTube Summarizer

by marvelousPizza@proton.me · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 19 Oct 2026

Summarize and fact-check YouTube videos using AI. Get instant video summaries and verify claims with Google Gemini.

Users

+1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#242K

#203K among extensions

Version

2.3

updated 22 Jun 2026

Users

monthly, 8 months

Latest, 19 Oct 2026: 6 usersMove the mouse over the chart for any month

Ratings count

monthly, 8 months

Latest, 19 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About YouTube Summarizer

Get instant AI-powered summaries and fact-checks for any YouTube video — right from the video page. FEATURES - One-click summaries: Click "Summarize this" next to any video title to get a clear, structured summary with key points - Fact-checking: Use the dropdown to fact-check claims made in the video — get a reliability assessment for each claim - Multi-language support: Configure your preferred languages — summaries are generated in the video's language if it matches your preferences - Local caching: Previously generated results are cached locally so you don't waste API calls on videos you've already summarized - Privacy-first: No data collection, no tracking, no analytics. Your API key stays in your browser HOW IT WORKS 1. Install the extension 2. Get a free API key from Google AI Studio (https://aistudio.google.com/apikey) 3. Open the extension settings and paste your API key 4. Go to any YouTube video — you'll see a "Summarize this" button next to the title 5. Click it to get an AI summary, or use the dropdown for a fact-check