PWA
Building Progressive Web Apps (PWAs) from Scratch in 2026
July 30, 2026
AIToolXRadar Editorial Team
6 min read
Progressive Web Apps (PWAs) combine the reach of the open web with the tactile responsiveness of native applications. By configuring a web app manifest and implementing a Service Worker caching strategy, your web utilities remain fully functional even without internet connectivity.
1. Service Worker Offline Cache Strategy
const CACHE_NAME = 'aitoolxradar-v1';
const ASSETS = ['/', '/index.html', '/styles.css', '/app.js'];
self.addEventListener('install', event => {
event.waitUntil(
caches.open(CACHE_NAME).then(cache => cache.addAll(ASSETS))
);
});
self.addEventListener('fetch', event => {
event.respondWith(
caches.match(event.request).then(cached => cached || fetch(event.request))
);
});