YouTube Auto Theater Mode

Open YouTube videos in theater mode and optionally hide live chat or chat replay. Preferences stay on your device.

Open YouTube videos in theater mode automatically, with one simple on/off switch. YouTube Auto Theater Mode gives standard desktop YouTube videos a wider view without repeatedly clicking the theater button. Features: • Automatically activates theater mode when you open a video. • Works when navigating between videos. • Remembers your on/off preference on this device. • Respects manual layout changes after automatic activation. • Includes a simple, keyboard-accessible toolbar popup. Turning the switch off stops automatic switching without changing the current video layout. Turning it back on applies theater mode to eligible open YouTube tabs. Privacy: • No tracking, analytics, ads or accounts. • No network requests or remote code from the extension. • Only your on/off preference is saved locally. Designed for standard desktop YouTube watch pages. Shorts, embedded players, fullscreen and mini player are left alone. Refresh existing YouTube tabs after installation. This is an independent extension and is not affiliated with or endorsed by YouTube or Google.