📴 A page that works offline service worker + manifest = PWA

Checking…

A service worker is a programmable network proxy that the browser runs for this page — even when the page is closed. Ours cached this exhibit on your first visit. From now on it loads from your disk first, network second.

Prove it

  1. Open DevTools → Network tab → set throttling to Offline (or turn off your Wi-Fi for real).
  2. Reload this page.
  3. It loads anyway. Check the status pill above — it knows.

Registering service worker…

Install it

The manifest makes this installable — look for the install icon in the address bar, or:

If the button stays hidden, the browser already considers it installed or wants you to use the address-bar icon.