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 12 on 2015-07-28
Not in Firefox
Not in Firefox for Android
In Internet Explorer version 10 on 2012-10-26
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