Safari 26 helps websites feel more like apps when you use them on iPhone and...

https://highstylife.com/how-do-i-add-a-website-to-my-ipad-home-screen-and-make-it-feel-like-an-app/

Safari 26 helps websites feel more like apps when you use them on iPhone and iPad. When you add a site to your Home Screen, it can now open in a cleaner, app-like view without the usual browser bars