YouTube Tab-Fullscreen by xander1421

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 Firefox and others like Zen browser
• Compatible with YouTube Premium and other extensions