Chrome extension that extends fullscreen functionality with "Windowed" mode, fullscreen inside a window.
It works for a most websites, like youtube, vimeo, twitch, vimeo. It has no website specific code.
No new buttons, custom UI or settings. Merges with the browser UI seamlessly.
This extension actually hooks into the browsers `requestFullscreen` method to work for all websites. Then we trick the website into showing its own fullscreen UI.
These is quite a bit of plumbing required to make a website believe it is in fullscreen, and make the UI work as expected.