Discourse Bookmark Icon

How can I change the Book mark Icon on my forum ? When I Bookmark the forum address to my phones home screen I t shows the discourse logo. How can i change that?
here is a screen shot of the icon on my phones home screen. Top row third icon from the left.

Thanks and any feedback is greatly appreciated!

Change the setting apple_touch_icon_url to match your icon.


@Falco thanks so much! Your feedback is greatly appreciated!