On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 4 on 2010-01-25
In Chrome Android version 18 on 2012-06-27
In Edge version 79 on 2020-01-15
In Firefox version 5 on 2011-06-21 Note: resize doesn't have any effect on <iframe>. See bug 680823)
In Firefox for Android version 5 on 2011-06-21 Removed from Firefox for Android version 79 on 2020-07-28
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 15 on 2013-07-02
In Opera Android version 14 on 2013-05-21
In Safari version 4 on 2009-06-08
Not in Safari on iOS
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 37 on 2014-09-03
Not in WebView on iOS