PWA

Expected for all web apps
- Responsive: to fit any form factor
- Safe: Served via TLS (a Service Worker requirement) to prevent snooping
- Linkable: meaning they’re zero-friction, zero-install, and easy to share. The social power of URLs matters.
Extra features not PWA-specific
- App-like-interactions: Adopt a Shell + Content application model to create appy navigations & interactions
- Re-engageable: Can access the re-engagement UIs of the OS; e.g. Push Notifications
PWA distinctive
- Connectivity independent: Progressively-enhanced with Service Workers to let them work offline
- Fresh: Transparently always up-to-date thanks to the Service Worker update process
- Discoverable: Are identifiable as “applications” thanks to W3C Manifests and Service Worker registration scope allowing search engines to find them
- Installable: to the home screen through browser-provided prompts, allowing users to “keep” apps they find most useful without the hassle of an app store