On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 1 on 2008-12-11
In Chrome Android from the start
In Edge version 12 on 2015-07-28
In Firefox version 1 on 2004-11-09
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer from the start
In Quest Browser from the start
In Opera from the start
In Opera Android from the start
In Safari from the start
In Safari on iOS from the start
In Samsung Internet from the start
In WebView Android from the start