Works quite well in what it's meant to do, but the button to reset the last volume setting doesn't seem to remember it correctly. I set to 250%, it remembers 240% for some reason, but not a huge deal, and still otherwise works great.

if you go on ezgif.com and have this extension enabled it won't let you playback any video/gif, otherwise works great

Been looking for an add-on like this for a while. This one works just fine.

Works fine. Sadly no setting options.

its amazing it actually works and its simple and easy to use.. a volume booster is supposed to boost volume and it does just that wow

Does it work? Yes.
Does it also do shady things in the background? Yes.