On Debian 12 (32 bit) it has no functionality and no icon appears anywhere on the YouTube screen; it worked on this device with Win. 10 installed.

very good thanks

Doesn't seems to work. No button on the YouTube page 😢

Extension greyed out. N effect on anything either.

FYUGFHHÑL

Ne fonctionne pas sur Fire-Fox

Does not work with FF ESR 102

動作しない｡

Simple and easy to use, just preset for Youtube, exactly what I needed.
Nothing more, nothing less. Just perfect.

Thanks a lot developer.

very good thanks

Does not work, button does not appear at all as of writing this review, on a fresh firefox/windows 11 install

I have to create an account to give this 1 star, this do nothing, you can't control anything and presets are horrible, really really horrible