On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 40 on 2015-01-21
In Chrome Android version 40 on 2015-01-21
In Edge version 17 on 2018-04-30
In Firefox version 44 on 2016-01-26 Note: In Firefox private windows, the serviceWorker object is undefined. See bug 1320796.
In Firefox for Android version 44 on 2016-01-26 Note: In Firefox for Android private windows, the serviceWorker object is undefined. See bug 1320796.
Not in Internet Explorer
Not in Node.js
In Quest Browser version 5.0 on undefined
In Opera version 27 on 2015-01-27
In Opera Android version 27 on 2015-01-29
In Safari version 11.1 on 2018-04-12
In Safari on iOS version 11.3 on 2018-03-29
In Samsung Internet version 4.0 on 2016-03-11
In WebView Android version 40 on 2015-01-21
Not in WebView on iOS