it's awesome on the sites it works on. Unfortunately not Amazon Music.

It works well, one minor, one major flaw, would be a 5 star otherwise...

Minor flaw : could boost volume by more than 32db (I'm hard of hearing).

Major flaw : Does NOT keep setting. Keep setting it at +32, as soon as I navigate to another page, or even refresh the page, it forgets the setting and goes back to 0.

Please allow it to be kept at the user setting.

Great add-on, now Firefox won't blast my ears out every time a new song plays!

Generally pretty good, doesn't seem to work on https://www.songsterr.com/ though

Work fine on youtube but not at all with Twitch...

Probably the best option so far in software volume boosters, at least if you're mostly using Youtube. Though, this plugin (like all others of the same genre) fail to keep the volume setting for a site. So for instance if you watch a YT video and set it to +8dB, then watch a second YT video, you'll be back to +0dB and will have to manually set it back to +8dB or whatever. This is very annoying as unfortunately I have got one of those 800$ Acer P.O.S. laptops that have the speakers mounted ON THE BOTTOM so any sound is effectively half as loud as it normally would be on any normal laptop. I don't know what they smoked while designing this laptop, but thanks to your plugin, I can AT LEAST understand what the Youtuber says when volume is at 100% in Windows. If you could make it so that it retains the +dB setting for a given domain name or at the very least, have users edit the default +dB value to something else than +0dB it would be 5 stars out of 5!

This works very well and all, but there is a very important feature that I have noticed is missing, the ability to save preset volumes for specific websites.

Super love the fact that it's open-source. I suggest adding a key bind to open the popup so that the users don't have to scroll to the upper right to adjust the volume.