Yours truly, in March 2009:
This full screen Safari option is left up to the developers though, which is the exact wrong way to do things. When adding an icon to your home screen in Safari you should be given the option to open that web page as full screen. […]
Letting the user choose what home screen bookmarks open as full screen pages would solve all of these problems. Users might actually use the feature and web site developers wouldn’t have to weigh the pros and cons of adding the meta tag to their pages, they could have it both ways. Hopefully Apple will eventually address this problem[…]
Here we are, sixteen and a half years later, and the option is finally available.
From the WebKit team:
For the last 17 years, if the website had the specific meta tag or Web Application Manifest display value in it’s code, when a user added it to their Home Screen on iOS or iPadOS, tapping its icon opened it as a web app. If the website was not configured as such, tapping its icon opened the site in a browser. Users had no choice in the matter, nor visible way to understand why some sites behaved one way while others behaved another.
On Mac, we took a different approach. When introducing Web Apps on Mac in Sep 2023, we made the decision to always open websites added to the Dock as web apps. It doesn’t matter whether or not the website has a Web Application Manifest. Users get a consistent experience. Add to Dock creates a web app.
Now, we are revising the behavior on iOS 26 and iPadOS 26. By default, every website added to the Home Screen opens as a web app. If the user prefers to add a bookmark for their browser, they can disable “Open as Web App” when adding to Home Screen — even if the site is configured to be a web app. The UI is always consistent, no matter how the site’s code is configured. And the power to define the experience is in the hands of users.
(Via Michael Tsai.)
➝ Source: webkit.org