Individual skill

progressive-web-app

Build Progressive Web Apps (PWAs) with offline support, installability, and caching strategies. Trigger whenever the user mentions PWA, service workers, web app manifests, Workbox, 'add to home screen', or wants their web app to work offline, feel native, or be installable.

cli-tool/components/skills/web-development/progressive-web-app/SKILL.md

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Repository stars (not skill ratings): 33,217
Repository last updated: Nov 8, 2026
License: MIT

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anthropic Repository topic
anthropic-claude Repository topic
claude Repository topic
claude-code Repository topic
agent-skills Repository topic
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claude-code-plugins Repository topic
cli Repository topic
mcp Repository topic
registry Repository topic
pwa Declared skill tag
web-dev Declared skill tag
service-worker Declared skill tag
frontend Declared skill tag
offline Declared skill tag
caching Declared skill tag
engineering Derived category

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# Progressive Web Apps (PWAs)

## Overview

A Progressive Web App is a web application that uses modern browser capabilities to deliver a fast, reliable, and installable experience — even on unreliable networks. The three required pillars are:

1. **HTTPS** — Required in production for service workers to register (localhost is exempt for development).
2. **Web App Manifest** (`manifest.json`) — Makes the app installable and defines its appearance on device home screens.
3. **Service Worker** (`sw.js`) — A background script that intercepts network requests, manages caches, and enables offline functionality.

## When to Use This Skill

- Use when the user wants their web app to work offline or on unreliable networks.
- Use when building a mobile-first web project where users should be able to install the app to their home screen.