On the standards track: Yes
Is Experimental: No
Is Deprecated: No
Not in Chrome
Not in Chrome Android
Not in Edge
In Firefox version 15 on 2012-08-28
In Firefox for Android version 15 on 2012-08-28
Not in Internet Explorer
Not in Quest Browser
Not in Opera
Not in Opera Android
In Safari version 11 on 2017-09-19
In Safari on iOS version 11 on 2017-09-19
Not in Samsung Internet
Not in WebView Android