I see now, that’s not a great solution since it will only work for the whitelisted sites. I’ve seen talk of mastodon adopting a custom url scheme (https://github.com/mastodon/mastodon/issues/2291). Maybe lemmy should consider something like that too.

Edit: also, checking those settings messed up opening images, when you click on an image, it takes you back to the main screen in the app.