On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 1 on 2008-12-11 Note: charset alias was made read-only in Chrome 45.
In Chrome Android version 18 on 2012-06-27 Note: charset alias was made read-only in Chrome Android 45.
In Edge version 12 on 2015-07-29
In Firefox version 1 on 2004-11-09
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 9 on 2011-03-14
In Quest Browser version 5.0 on undefined Note: charset alias was made read-only in Quest Browser 5.0.
In Opera version ≤12.1 on undefined Note: charset alias was made read-only in Opera 45.
In Opera Android version ≤12.1 on undefined Note: charset alias was made read-only in Opera 45.
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 Note: charset alias was made read-only in Samsung Internet 5.0.
In WebView Android version 1 on 2008-09-23 Note: charset alias was made read-only in WebView 45.
In WebView on iOS version 1 on 2007-06-29