Honestly, really good, comparing to other volume-control add-ons.

Hulu seems to not load video unless this is disabled, but otherwise has been nice to use when volume sliders are missing from a site.

does exactly what its supposed to do.

Simple UI and works. I mostly use volume controls to LOWER the volumes. Every other extension is for raising the volumes so their UI for lowering the volume is robust and just mostly do intervals of 10 and sometimes having it that just 10 is still too high. So this extension fills all my needs and wants. Great work!

works well. But recently the volume bar is some how offset to the left.

очень удобно смотреть фильмы

Works well.
To the people having problems, if your extensions or browser(in my case librewolf) blocks WebGL it won't work. Simply enabling WebGL fixes the issue.

Works straight out of the box flawlessly. Nice to see that it's FOSS and I hope it stays that way.

Hats off to the dev for his work, you're awesome! Also, the fact it runs on a "visit" basis makes trusting it even easier. Didn't have to enable the optional option.

Writes up and down for each tab

Works as described. I'll never understand why certain sites (like Bandcamp or Patreon) don't have an on-site volume slider for their music widgets and instead just blast you at full volume... Being able to adjust the volume down per site/tab is just perfect and way better than having to temporarily turn down the volume for the whole browser instance. The FOSS nature and minimal permissions are the cherry on top that make this a perfect choice :)

Best sound booster!

Get this extension! It is excellent! Here is why:
- works perfectly
- open source
- streamlined
- contains extensive documentation
- minimal permissions required to function
- the developer is very active (see other review for his/her responses and fixes)

There are many extensions that provide volume boosting functionality. The ones I have tried are completely untrustworthy. The main issues I have are things like: ad injection, NOT open source, pure copycats of other extensions, and so forth.

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