Opens hidden frames secretly from user

wasted my 5 seconds writing this

Highly recommended add-on. Simple and useful application. 5 stars.

реально помогает

Twitch Audio problem.it lag my audio.it's auto vol up other pages too.also need a option to 1 click 300/400+ vol up.

Awesome extension, Highly recommended.Increases volume much higher than its original volume.

very useful app and highly recommended.

useful

I could never hear anything especially watching netflix and some low talkers on youtube. Now I can hear it great, I have to refresh the page and restart stuff but at least now I can hear it.

Old laptop always had crappy speakers. This app fixes that. Thanks

Ottima. Con questa estensione posso gestire il volume della tab che mi interessa senza dover modificare il volume di sistema.

Great add-on, Works perfectly

it is really amazing app. thanks firefox.

brilliant app,excellent with dolby atmos

Great! It does what it says it does. Happy Camper.

It is amazing.