The definition of a PWA is a page that uses features like add to homescreen, service workers... or push notifications. It doesn't have to use this and the brows

The definition of a PWA is a page that uses features like add to homescreen, service workers... or push notifications. It doesn't have to use this and the browser doesn't have to support it. PWA will progressively use such features when they are supported, and that's where the name comes from. If a page requires these things to function then it's not a PWA.