With Safari 26 on iPhone and iPad, many websites now act more like standalone...

https://www.insert-bookmark.win/safari-26-lets-you-add-websites-to-your-iphone-or-ipad-home-screen-and-use-them

With Safari 26 on iPhone and iPad, many websites now act more like standalone apps. When you add a site to your Home Screen, it opens without the usual browser bars, giving you a cleaner, more app-like feel