Ytsum: Summarize YouTube Videos icon

Ytsum: Summarize YouTube Videos

Extension Actions

How to install Open in Chrome Web Store
CRX ID
nbmdbnechaaobmladbifkhpkfndefndh
Description from extension meta

Summarize YouTube Videos. Get direct links to key points in the video.

Image from store
Ytsum: Summarize YouTube Videos
Description from store

No subscription needed. Use your Anthropic API key & Claude 3.5 Sonnet to summarize YouTube videos.

Feedback welcome 🙏 [email protected]

Instructions:
- Click the extension icon and enter your Anthropic API key (which you can get here: https://www.anthropic.com/api)
- Open a YouTube video, scroll down a little, the extension box should appear above the comments section
- Click fetch transcript (if auto fetch is enabled you can skip this step)
- Click analyze transcript (this does not happen automatically)

Note:
- Token counter is slightly off (in general the estimate is higher than the actual usage)
- Fails sometimes, if the response from the API isn't perfectly formed
- Does not work with extremely long videos due to token limits

Changelog:
1.05 update model to claude sonnet 4.5

Latest reviews

Marianna Kenesy
An amazing extension! It’s been a game-changer for my research, saving me loads of time. The only thing missing? An option to save summaries as PDFs. But honestly, that’s a minor wish compared to everything else it delivers. Highly recommended!
Lazar Jovanovic
Pretty amazing extension, it saves me tons of time I would waste with watching bad or irrelevant YT content, kudos for an amazing product!