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LeiaKn's avatar
LeiaKn
Iron Contributor
Oct 24, 2025

What’s the best YouTube video summarizer right now?

Hey folks — I’m drowning in long vids and need something that can spit out solid summaries (key points + timestamps) without me watching 2 hours every time. Ideally it should work from the URL, handl...
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BreckenFoster's avatar
BreckenFoster
Steel Contributor
Jun 26, 2026

Glasp is a Chrome extension that serves as a lightweight YouTube video summarizer, allowing users to take notes and generate AI-powered summaries of online videos. It automatically extracts video transcripts, generates timestamped key points, and supports one-click export of all annotations to major note-taking platforms, making it an indispensable tool for learners and researchers.

How to Use YouTube Video Summarizer

Step 1: Install the extension from the Chrome Web Store.

Step 2: Open any video page in your browser.

Step 3: Click the extension’s sidebar icon, then click the Summary button to trigger the AI analysis.

Step 4: View the generated content, including a full video summary, key points, and corresponding timestamps.

Finally, export your notes and summary to Markdown, Notion, or other supported formats as needed.

This browser extension offers a cost-free, one-click workflow for organizing lengthy videos. For users who need to organize video learning materials but don’t want to switch to third-party desktop software, it’s an ideal video summarization tool for everyday use.

Drawbacks

  • The summary feature is only available for videos with official subtitles.
  • Advanced AI features and private note storage require a paid Pro subscription.
  • The quality of the summary depends largely on the completeness and accuracy of the video's subtitles.