PWA Service Worker Generator

Generate Progressive Web App service workers with advanced caching strategies, offline support, and background synchronization. Essential for creating fast, reliable, and engaging web experiences that work seamlessly across all network conditions.

Configuration

Cache Strategy

Cache Name

Offline supportBackground sync

URLs to Cache

service-worker.js

const CACHE_NAME = 'my-app-v1';
const urlsToCache = [
  "/",
  "/styles/main.css",
  "/script/main.js",
  "/images/logo.png"
];

// Install event
self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then((cache) => cache.addAll(urlsToCache))
      .catch((err) => console.error('Cache install failed:', err))
  );
  self.skipWaiting();
});

// Fetch event
self.addEventListener('fetch', (event) => {
  event.respondWith(
    caches.match(event.request)
      .then((response) => {
        return response || fetch(event.request)
          .then((response) => {
            if (response && response.status === 200) {
              const responseClone = response.clone();
              caches.open(CACHE_NAME).then((cache) => {
                cache.put(event.request, responseClone);
              });
            }
            return response;
          })
          .catch(() => {
            if (event.request.destination === 'document') {
        return caches.match('/offline.html');
      }
            return new Response('Offline', { status: 503 });
          })
      })
  );
});



// Activate event
self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((cacheNames) => {
      return Promise.all(
        cacheNames.map((cacheName) => {
          if (cacheName !== CACHE_NAME) {
            return caches.delete(cacheName);
          }
        })
      );
    })
  );
  return self.clients.claim();
});

Quick Presets

Click on any preset below to load a pre-configured service worker setup:

Progressive Web App Workflow Guide

What This Tool Delivers

Generate Progressive Web App service workers with advanced caching strategies, offline support, and background synchronization. The tool creates production-ready service worker code with optimized caching patterns including Cache First, Network First, and Stale While Revalidate strategies for different types of resources and user scenarios.

The generated service workers support app-like installation, automatic updates, and proper lifecycle management for progressive web applications. Download the ready-to-use service worker file and integrate it into your web application.

Auto-generate service workers with multiple caching strategies
Offline support with fallback pages and error handling
Background sync for form submissions and data synchronization
Production-ready code with proper error handling and lifecycle management

How to Use the Generated File

1. Download the Service Worker: Click the "Download" button to save the generated service-worker.js file to your project root directory.

2. Register the Service Worker: Add this code to your main JavaScript file or HTML:

if ('serviceWorker' in navigator) {
  navigator.serviceWorker.register('/service-worker.js')
}

3. Test & Deploy: Test the service worker in your development environment, then deploy to production. The service worker will automatically cache resources and enable offline functionality.

Request a Feature

Have an idea to improve this tool? Share your suggestions and help us make it better! (One request per day)

Toolbadu