Description
YouTube Tab-Fullscreen
Expand YouTube videos to fill your entire browser tab, similar to Twitch's theater mode.
What It Does
This extension adds a tab-fullscreen mode to YouTube. Unlike regular fullscreen, the video stays within your browser tab so you can still see other tabs and use browser shortcuts.
Features
- Expand videos beyond standard theater mode to fill your tab
- Press Alt+T or click the toolbar button to toggle
- Remembers your preference as you browse videos
- Matches YouTube's native design
- Lightweight (under 50KB)
How to Use
1. Install the extension
2. Go to any YouTube video
3. Click the button in video controls or press Alt+T
Privacy
- No data collection or tracking
- No external connections
- Only requires activeTab permission
Compatibility
- Works on all YouTube video pages
- Supports Chrome, Edge, Brave, and Firefox
- Compatible with YouTube Premium and other extensions
Reviews
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Permissions (1)
Permissions
activeTabℹ Can access the current tab when you click the extension
Details
| Version | 1.2.0 |
| Updated | Jan 14, 2026 |
| Size | 12.39KiB |
| First Seen | Mar 24, 2026 |
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