YTM Enhancer от gormanity

YTM Enhancer supercharges YouTube Music to make it the best browser-based media
player.

It upgrades YouTube Music in your browser with smarter controls, automation, and
visual enhancements, without forcing you into a replacement app or wrapper.

If you love the ubiquity of YouTube Music's service but want a more
fully-featured listening experience, this extension is for you.

Key features include:

• Quick Settings: one panel for playback control, tab switching, and now playing
  details
• Autoplay: optionally start playback automatically when YouTube Music loads
• Auto Skip Disliked: automatically skip disliked tracks when they appear
• Audio Visualizer: configurable visualizer overlays
• Hotkeys: playback and focus shortcuts
• Mini Player: compact Picture-in-Picture controls while multitasking
• Notifications: track-change and playback-resumed desktop notifications
• Sleep Timer: stop playback by duration or clock time

YTM Enhancer is open source and private by design: no analytics, no tracking,
and no external backend services. See for yourself at
https://github.com/gormanity/ytm-enhancer.