There are similar extensions out there, but Global Speed has the best compatibility.
- Support for Shadow DOMs. Many streaming sites like AppleTV+ are starting to use them.
- Support for unconnected media elements. This means support for Spotify, Amazon Music, NPR, and many other music and podcast streaming sites.
- Apply filters (grayscale, contrast, invert, brightness, mirrorX, etc) on select elements (videos by default), or even the entire page. This is a secondary feature, and as long as it's off, has no performance impact.
- - - Could be used to color correct videos. I recently watched TeamFourStar's announcement of DBZA ending. The video was very dim, and it was perfect use case for this feature.
- - - You could also use a cool trick to simulate dark theme. Invert the entire page and double invert videos. That way the video get reverted back to their original color, while the UI remains dark. There's a default hotkey that triggers it ("KeyE").
- Hotkey Editor with optional shortcuts for speeding up/down, seeking, adjusting volume, set/go to marker, looping between two points, toggle filter (grayscale, invert, sepia, etc), and more. The media hotkeys are also compatible with Picture-In-Picture mode.
- Very performant, only runs on visible tabs.
The permission required is broad. So, if you're security conscious, you could build it yourself.
On the Firefox page you might notice the very low rating. That's a long story. In short, I called out an extension developer for hijacking Amazon links and he retaliated by creating fake reviews.
https://www.reddit.com/r/chrome_extensions/comments/fcs5tl/p...
