Picture-in-Picture / Always-on-top window

[cvzi]

In Chrome 111+ it's possible to show an always-on-top window with HTML content, previously only a video could be shown like this. This could be used to show the lyrics even if Youtube/Spotify tab is in the background.

• https://developer.chrome.com/blog/the-future-of-picture-in-picture/
• https://developer.chrome.com/docs/web-platform/document-picture-in-picture/

A website that uses this:
https://lazy-guy.github.io/tomodoro/index.html

[cyfung1031]

Please be reminded that PIP requires user-interaction. You cannot suddenly popup that window without user clicking. (like auto lyrics)

And Firefox nevers support PIP.

[cyfung1031]

YouTube uses popup window to do such kind of feature.

window.open(
  'https://github.com/cvzi/genius-lyrics-userscript/issues/53',
  '0.a.random.name', 
  'menubar=0,location=0,scrollbars=0,toolbar=0,width=600,height=600'
);

This will create a window object and you can use postMessage and addEventListener('message', ...) to communicate with the main window.
You can use that robots.txt to hack your script in that window, by detecting the window.name