Pretty much the best Volume Controller in Firefox that I've found while also being pretty lightweight and straightforward.

after giving permission to access the data on visited websites it's working fine. Simple but great extension

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

The sound on Netflix is far too quiet; I guess they want your volume up as much as possible because they like to have sound that's both very loud and very quiet? Probably fine with headphones or a good sound system, but the maximum volume on my gaming laptop was not enough for me to be able to hear well (And I'm 25!)

This extension works perfectly! Thank you to the author!

U have to add feature all tabs volume same. When ever i reload my tab volume booster gets reseted everytime
its annoying to increase vol again/

When it works, it works well, it's simple and effective. However, it completely breaks audio on a lot of sites such as IMDB, where there is no sound, or Prime Video, which shows an error message if you try to watch anything. The only way around it is a four step process where I have to right click the icon, click 'Manage Extension', click the toggle to disable, then click back to the tab I was in. And then when I finish watching whatever video, I have to click back to the extension management tab and re-enable it.

It would be nice if there was an easy way to disable the extension in 1-2 clicks, or right click it and blacklist the entire site in the current tab so that it automatically disables itself, it would be much less of a hassle. Ideally, it would just work on all sites, but I'd settle for workarounds.

EDIT: Found another problem where it really breaks Bing functionality. I can't access the menu, video result previews don't play, and only the first 8 thumbnails load in, while everything else is a black rectangle. Image searches show a similar problem where no thumbnails below the top results load in. If I make my window larger, more results show, but as soon as I page down, broken.

Doesn't work on https://web.whatsapp.com/ :(

OUTSTANDING!
Others were silent/muted, but this one works well.

Runs very well for HTML5 video. Clean and Light. Thanks for creating this extension! Very useful!

made me muted :/

works perfectly. exactly what i wanted, a no-nonsense extra volume slider. i have issues with audio sensitivity and being able to make things as quiet as humanly possible is a godsend.

works great once set up, super helpful for lots of sites.

It seems to be interfering with being able to play videos at all on Amazon Prime video at the moment which is a shame, but disabling it whilst on Prime then enabling after does the trick

really good but pls fix the problem where it goes earr*ape loud on certain parts of a youtube video when set on highest setting been using this for almost a year now and its the only problem i have +can you make it work on reddit?

i have been using it for a few months now and it works great recently had a small problem with it interfering with Disney plus but the developer help me figure it out

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