YouTube Tab-Fullscreen

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