Safari 26 brings a smoother, app-like feel to many websites on iPhone and iPad....

https://www.foxtrot-bookmarks.win/safari-26-on-iphone-and-ipad-brings-websites-closer-to-app-like-experiences

Safari 26 brings a smoother, app-like feel to many websites on iPhone and iPad. When you add a site to your Home Screen, it now opens in a clean, distraction-free window without browser bars