Works great on every site I used it on. Even streaming sites that do not support speed changes. No additional features needed by me. No complaints. So, 5-stars.

Work on everything I tried it on, as advertised. Being able to choose any speed from 0.02x to 5x covers all my needs. Great app.

I don't say that many things are good, I'm not used to praising programs, but this is one of the best, most useful add-ons! I use it with joy every day. Huge thanks to the creator! This add-on is so great!!!

Working Prime Video

Thank you, it works perfectly.

Merci infiniment <3 ! thank you so much <3 !

Can you make a mobile app version of this?
This app has improved my life exponentially. This app needs to be mandatory on all versions of Firefox for me. I'd donate, but I'm in debt right now. This guy isn't even asking for money. I hope I remember to when I'm not in debt: https://geekyadvisor.blogspot.com/ I still wish for 2.75 and now 3.75 and 4.75, and even 1.75. They improved the app and fixed the audio issues. I use 3.5, 2.5, 1.5, and 1.25 all the time. This app is so great.