# Pwa

> Progressive Web Apps with offline support and installability

- Skill: `ffsshhttiikk/pwa` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ffsshhttiikk/pwa`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ffsshhttiikk/pwa/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: ffsshhttiikk (https://skillmd.com/u/ffsshhttiikk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ffsshhttiikk/pwa

---

## What I do
- Build installable web apps
- Implement offline functionality
- Create service workers
- Configure web app manifests
- Handle background sync

## When to use me
When creating web apps that work offline and can be installed.

## Service Worker
```javascript
self.addEventListener('install', e => {
  e.waitUntil(caches.open('v1').then(c => c.addAll(['/'])));
});

self.addEventListener('fetch', e => {
  e.respondWith(caches.match(e.request).then(r => r || fetch(e.request)));
});
```