Para youtube esta é de longe a melhor extensão, pois não pede permissões para acessar os dados dos sites visitados. A mais segura que econtrei até agora, é fonte aberto no github.

DOES NOT WORK!! - DO NOT INSTALL

Good work, and no permissions required.

Does not work at all. Moving the slider does nothing.

Why is this addon interrupting amazon?

Does not work

broken

does not work

Doesn't work, crappy UI too.

Doesn't work

It doesn't affect "apps" in tabs like games. Only videos, so not tabs.

didn't work on scratch.mit.edu

Ohne Funktion. Man kann den Regler verschieben, der Tab plärrt weiter laut.

no permissions required, does what it says

Can't assign shortcut comparing to the "600%" one.

If you can't associate the tab volume with tabs, then FTFO... don't need another useless icon overlowing my Firefox bar

I have tested this extension on Dailymotion. The volume has not changed. This extension is absolutely unusable.

Doesn't work. Doesn't do anything.