On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome from the start
In Chrome Android from the start
In Edge version ≤18 on undefined
In Firefox version 28 on 2014-03-18
In Firefox for Android version 27 on 2014-02-04
Not in Internet Explorer
In Quest Browser from the start
In Opera from the start
Not in Opera Android
Not in Safari
Not in Safari on iOS
In Samsung Internet from the start
In WebView Android from the start