FAQ
Volume Manager doesn't work.
It totaly depends on your browser. Try update or download latest Chrome browser
Volume controller makes my sound stuttering.
It occurs when CPU can't handle 100% of the sound. You should stop programs you don't use or in task manager change CPU priorities
Volume booster makes my sound terrible?
You have bad audio system(
How to disable or change shortcuts?
For this go to Options by right clicking clicking on extension icon and then Options
How to mute all Tabs?
For this go to Options by right clicking clicking on extension icon and then Options
Why some videos not going to Fullscreen?
It souldn't happen... But if it is, click f11 (for Windows) or Command+Shift+F (for Mac)
How to install the extension on Opera?
You should install this Opera extension
How to install the extension on other browsers?
Curently feature to totally control volume have only chromium based browsers (all except Mozilla, Explorer and Safari)