This is the speed Add-On that will stay active when the page is refreshed. This is the only one I have found so far that is persistent. The mappable keys for speed control are awesome as well.

I use this add-on all the time - watching clips, listening to audiobooks or pdfs, etc

very good，I like it very much.

An ADHD must-have add on. I've tried it on Youtube, Hulu, and Disney Plus. Fast speeds when the video pacing is too slow for my neurospicy brain. 16x through ads like a dream. THANK YOU.

It is good but twitter videos and GIFs was stuck .

good

It's great! But please make it for Android as well!

I love it. I can control videos with my custom shortcuts to stop, jump and speed up. I often watch at 3x or more. It made watching videos so fun. Thank You Mr Developer.

funciona muy bien en cualquier web