skills/progressive-web-app/SKILL.md
Build progressive web apps using service workers, web manifest, offline support, and installability. Use when creating app-like web experiences.
npx skillsauth add cenjie/skills progressive-web-appInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
Build progressive web applications with offline support, installability, service workers, and web app manifests to deliver app-like experiences in the browser.
Minimal working example:
// public/manifest.json
{
"name": "My Awesome App",
"short_name": "AwesomeApp",
"description": "A progressive web application",
"start_url": "/",
"scope": "/",
"display": "standalone",
"orientation": "portrait-primary",
"background_color": "#ffffff",
"theme_color": "#007bff",
"icons": [
{
"src": "/images/icon-192.png",
"sizes": "192x192",
"type": "image/png",
"purpose": "any"
},
{
"src": "/images/icon-512.png",
"sizes": "512x512",
"type": "image/png",
"purpose": "any"
},
{
// ... (see reference guides for full implementation)
Detailed implementations in the references/ directory:
| Guide | Contents | |---|---| | Web App Manifest | Web App Manifest | | Service Worker Implementation | Service Worker Implementation | | Install Prompt and App Installation | Install Prompt and App Installation | | Offline Support with IndexedDB | Offline Support with IndexedDB | | Push Notifications | Push Notifications |
development
Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations. Applies to tasks involving Hermes optimization, JS thread blocking, bridge overhead, FlashList, native modules, or debugging jank and frame drops.
development
Design engineering principles for making interfaces feel polished. Use when building UI components, reviewing frontend code, implementing animations, hover states, shadows, borders, typography, micro-interactions, enter/exit animations, or any visual detail work. Triggers on UI polish, design details, "make it feel better", "feels off", stagger animations, border radius, optical alignment, font smoothing, tabular numbers, image outlines, box shadows.
development
General-purpose Static Application Security Testing (SAST) skill for code vulnerability analysis. Trigger when the user asks to: "analyze code for vulnerabilities", "review code security", "find security bugs", "do a SAST scan", "check for [vulnerability type] in code", "audit source code", or requests a security code review of any language or framework. Covers 34 vulnerability classes across web, API, auth, mobile, and logic layers.
tools
Helps understand and write EAS workflow YAML files for Expo projects. Use this skill when the user asks about CI/CD or workflows in an Expo or EAS context, mentions .eas/workflows/, or wants help with EAS build pipelines or deployment automation.