I've used plenty of these types of volume booster add-ons and this one is the best one I've used.

Does exactly what it says. This is what I needed for the most. Thank you.

It is a really helpful add-on. Some YouTube videos are really quiet even at full volume, so this add-on comes in handy in these situations.

Perfect to use with youtube music or any other web based music player.

recommend it

very ok - don't know if the add-on remembers a site or if it's possible - but very well already

Great Extension. If you could add global boost feature, to enable me to boost volume for all open tabs.

Only one that works. Just install!