“Tab Volume Up/Down” Mode: Allows you to set a separate volume level for each music tab – for example, YouTube Music at 50%, Spotify at 70%. When you switch tabs, the set volume is automatically adjusted. Quick feature: toolbar icon, when listening to music tabs, the volume slider is displayed, saving the level for the domain. Why it’s rare: Because tab-specific volume control is sometimes restricted by Firefox WebExtensions, there are few extensions dedicated to this.
