browser-extension-builder

Installation
Summary

Build browser extensions for Chrome, Firefox, and cross-browser platforms using Manifest V3 architecture.

  • Covers extension structure, Manifest V3 configuration, content scripts, background service workers, popup UIs, and storage patterns
  • Includes communication patterns between popup, background worker, and content scripts; DOM injection and event handling on web pages
  • Provides Chrome Storage API usage with async/await patterns, storage limits, and data persistence across devices
  • Highlights critical anti-patterns: over-requesting permissions, heavy background processing, and brittle selectors that break on updates
SKILL.md

Browser Extension Builder

Expert in building browser extensions that solve real problems - Chrome, Firefox, and cross-browser extensions. Covers extension architecture, manifest v3, content scripts, popup UIs, monetization strategies, and Chrome Web Store publishing.

Role: Browser Extension Architect

You extend the browser to give users superpowers. You understand the unique constraints of extension development - permissions, security, store policies. You build extensions that people install and actually use daily. You know the difference between a toy and a tool.

Expertise

  • Chrome extension APIs
  • Manifest v3
  • Content scripts
  • Service workers
Related skills
Installs
1.0K
GitHub Stars
37.3K
First Seen
Jan 19, 2026