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.
Profile →npx skills add sickn33/agentic-awesome-skills --skill progressive-web-app --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# 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. - Use when the user asks about caching strategies, service workers, or improving web app performance and resilience. - Use when the user mentions Workbox, web app manifests, background sync, or push notifications for the web. - Use when the user asks "can my website be installed like an app?" or "how do I make my site work offline?" — even if they don't use the w
- Overview
- When to Use This Skill
- Deliverables Checklist
- Step 1: Web App Manifest (manifest.json)
- Step 2: HTML Shell (index.html)
- Step 3: Service Worker Registration & Install Prompt (app.js)
- Step 4: Service Worker (sw.js)
- Cache Versioning (critical — always increment on deploy)
- Install — Pre-cache the App Shell
- Activate — Clean Up Old Caches
- Fetch — Caching Strategies
- Edge Cases & Platform Notes
- iOS / Safari Quirks
- HTTPS Requirement
What does the progressive-web-app skill do?
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.
How do I install it?
Run `npx skills add sickn33/agentic-awesome-skills --skill progressive-web-app --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From sickn33/agentic-awesome-skills, a repository with 44,414 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.