On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 35 on 2014-05-20 Note: Chrome does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In Chrome Android version 35 on 2014-05-20 Note: Chrome Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In Edge version 79 on 2020-01-15 Note: Edge does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In Firefox version 41 on 2015-09-22
In Firefox for Android version 41 on 2015-09-22
Not in Internet Explorer
In Quest Browser version 5.0 on undefined Note: Quest Browser does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In Opera version 22 on 2014-06-03 Note: Opera does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In Opera Android version 22 on 2014-06-17 Note: Opera Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In Safari version 10 on 2016-09-20
In Safari on iOS version 10 on 2016-09-13
In Samsung Internet version 3.0 on 2015-04-10 Note: Samsung Internet does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In WebView Android version 37 on 2014-09-03 Note: WebView Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
In WebView on iOS version 10 on 2016-09-13