YouTube FullWindow

About

Tired of YouTube's cramped theater mode?

YouTube FullWindow adds a true full-window mode that fills your entire browser window with the video player — edge to edge, top to bottom. YouTube's original theater mode and fullscreen remain untouched, so you get the best of both worlds.

FEATURES

• Full-Window Mode — Press W or click the new button in the control bar to expand the video player to fill your entire browser window.

• Preserves Original Behavior — YouTube's built-in theater mode (T key) and fullscreen (F key) still work exactly as before.

• Smart Mode Switching — The extension intelligently handles transitions between default, theater, full-window, and fullscreen modes.

• Control Bar Button — A dedicated button is added next to the fullscreen button for quick access.

• Lightweight — Minimal code, zero bloat, no external dependencies.

KEYBOARD SHORTCUTS

W — Toggle full-window mode (fills entire browser window)
T — Toggle YouTube theater mode (original)
F — Toggle native fullscreen
Esc — Exit to default view

PRIVACY

• No data collection of any kind
• Only needs access to youtube.com to function
• No external servers, no tracking, no analytics
• Open source (MIT license)