On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 1 on 2008-12-11
In Chrome Android version 18 on 2012-06-27
In Edge version 17 on 2018-04-30
In Firefox version 17 on 2012-11-20
In Firefox for Android version 19 on 2013-02-19
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version ≤12.1 on undefined
In Opera Android version ≤12.1 on undefined
In Safari version 3 on 2007-10-26
In Safari on iOS version 1 on 2007-06-29
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 4.4 on 2013-12-09