"Add to Home Screen" isn't new, it's how links to web pages have been added as icons for a long time. That's why the <head>s of some sites links to icons just f

"Add to Home Screen" isn't new, it's how links to web pages have been added as icons for a long time. That's why the <head>s of some sites links to icons just for display alongside iOS native apps. Support for the technologies PWAs use will change what the sites can do.