On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 38 on 2014-10-07 Note: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).
In Chrome Android version 38 on 2014-10-08 Note: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).
In Edge version 13 on 2015-11-12
In Firefox version 38 on 2015-05-12
In Firefox for Android version 38 on 2015-05-12
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 25 on 2014-10-15 Note: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).
In Opera Android version 25 on 2014-10-16 Note: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).
In Safari version 9.1 on 2016-03-21
In Safari on iOS version 9.3 on 2016-03-21
In Samsung Internet version 3.0 on 2015-04-10 Note: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).
In WebView Android version 38 on 2014-10-08 Note: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).
In WebView on iOS version 9.3 on 2016-03-21