Changes YouTube theater mode appearance to fullwindow, press T to enter, T or ESC to exit
This script changes the appearance of YouTube's "Theater Mode" to a more useful "fullwindow".
What is fullwindow? It's a state between the default view and fullscreen. You can easily switch browser tabs or windows while enjoying an immersive viewing experience close to fullscreen.
Operation:
Press T to enter, press T or ESC to exit.
Optimized YouTube behavior logic:
①If entering fullscreen from theater mode, then exiting fullscreen (by double-clicking the screen, pressing F or ESC, or clicking the icon in the lower right corner) will directly return to the default view instead of theater mode.
②Even in fullscreen state, the picture-in-picture button and theater mode button are displayed.
If you find that new YouTube video links always open in theater mode instead of the default view, try setting the "wide" value in browser Cookies to 0 or delete it directly.
https://www.reddit.com/r/youtube/comments/11jrq4n/youtube_keeps_defaulting_me_into_theater_mode/
For a better YouTube experience, it is recommended to use with Enhancer for YouTube™, which allows picture-in-picture playback while viewing comments and disables autoplay when opening new video links.
