YouTube Video Summarizer with Gemini by timstewartj
Summarize YouTube videos in Gemini from Firefox's sidebar.
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About this extension
YouTube Video Summarizer with Gemini helps you understand YouTube videos faster by opening Gemini in Firefox's sidebar with the selected video URL already included in a summarization prompt.
Use it when you want the key ideas from a video without interrupting your browsing flow.
What it does
Privacy and account behavior
The extension does not collect user data. It also does not mark videos as watched, click YouTube controls, or modify your YouTube watch history or recommendations.
Notes
You need access to Gemini in Firefox for summaries to work. Gemini's responses and availability are handled by Google.
Use it when you want the key ideas from a video without interrupting your browsing flow.
What it does
- Opens Gemini in Firefox's sidebar from a YouTube video page.
- Lets you right-click YouTube thumbnails and send that video to Gemini for summarization.
- Automatically includes the YouTube video URL in a customizable prompt.
- Keeps the workflow focused on summarization without clicking YouTube controls.
Privacy and account behavior
The extension does not collect user data. It also does not mark videos as watched, click YouTube controls, or modify your YouTube watch history or recommendations.
Notes
You need access to Gemini in Firefox for summaries to work. Gemini's responses and availability are handled by Google.
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Permissions and data
Required permissions:
- Display notifications to you
- Access browser tabs
- Access your data for sites in the youtube.com domain
- Access your data for gemini.google.com
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.7.0
- Size
- 50.69 KB
- Last updated
- 6 days ago (May 8, 2026)
- Related Categories
- License
- MIT License
- Version History
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