To use these add-ons, you'll need to download Firefox.

Log in
Add-on icon

Reviews for Notification Sound

Notification Sound by freaktechnik

3.5 Stars out of 5
5
20
4
10
3
3
2
2
1
12
Response by freaktechnik

Developer response

posted 6 years ago
Glad you enjoy it!

Sadly Facebook uses a way of showing notifications that the extension currently can't reliably intercept.