Agent skill · software engineering · secondsky
progressive-web-app
Progressive Web Apps with service workers, web manifest, offline support, installation prompts. Use for installable web apps, offline functionality, push notifications, or encountering service worker registration, cache strategy, manifest configuration errors.
Why this skill is useful
Includes executable service worker scripts and manifest configuration that enable offline functionality and installation capabilities not commonly known.
What it needs
Requires none installed locally. About 1k tokens when loaded. Last updated 2026-08-06. 204 stars on the source repository.
What this skill does
Progressive Web App (PWA) Build web applications that work like native apps with offline support and installability. Web App Manifest Service Worker Install Prompt Push Notifications PWA Checklist [ ] HTTPS enabled [ ] Web manifest configured [ ] Service worker registered [ ] Offline fallback page [ ] Responsive design [ ] Fast loading (<3s on 3G) [ ] Installable
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills secondsky/progressive-web-app