Service Worker Cache Builder

Generate optimized caching strategies for offline-first PWAs

Cache Configuration

Enable Offline Fallback Page

Precache Critical Assets

Add New Route

Route Pattern (e.g., /api/*, /images/*)

Caching Strategy

Max Cache Age (hours)

Max Cache Entries

Generated Service Worker

// Service Worker code will appear here

Estimated Cache Size

0 MB

Total Routes Configured

Offline Coverage

Network Requests Saved

Cache Behavior Simulation

Made by one person, free to use.

I started krzen in April 2026 and have built the image compressor plus 25 page-speed tools since. I pay for the domain and the hours myself. A small tip keeps it going. The tools stay free either way.

Michael

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