On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 61 on 2017-09-05 Note: The onbeforeinstallprompt event handler property is not supported.
In Chrome Android version 61 on 2017-09-05 Note: The onbeforeinstallprompt event handler property is not supported.
Not in Deno
In Edge version 79 on 2020-01-15
Not in Firefox
Not in Firefox for Android
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 48 on 2017-09-27 Note: The onbeforeinstallprompt event handler property is not supported.
In Opera Android version 45 on 2018-02-15 Note: The onbeforeinstallprompt event handler property is not supported.
Not in Safari
Not in Safari on iOS
In Samsung Internet version 8.0 on 2018-07-18 Note: The onbeforeinstallprompt event handler property is not supported.
In WebView Android version 61 on 2017-09-05 Note: The onbeforeinstallprompt event handler property is not supported.
Not in WebView on iOS