Perfect as it its. A volume slider & booster that works amazingly!

Genuine life-saver. Perfect for people like myself that have hard of hearing issues. Some videos are simply too quiet and this saves my life. Makes content way more enjoyable.

As it says: simple and reliable. Awesome.

Nothing more, nothing less. Perfect.

Does what it says on the tin! Simple to use but an amazing improvement to browsing and youtube.

It works fine!

Δεν έχω βρει καλύτερο!!!

Great. But needs the ability to stay on permanently, rather than have to be turned on for each new tab. I would donate to the developer if the add-on did that.