Disable Default Alert Sound For Firefox Web Notifications

I'm using the Web Notification API to show desktop notifications from my web app under OSX. In Firefox only, when a notification is triggered, it also plays a sound (in Safari and

Solution 1:

On OS X, go to System Preferences, then Notifications. Choose Firefox and uncheck Play sound for notifications to get rid of the sound.

Solution 2:

The Web Notification API now has the config option silent, but support is patchy, Chrome v43+, Firefox (not yet supported).

I'd suggest building silent into your notifications then if/when Firefox support it, it will just work.