Browser Extension Anti-Patterns

Common mistakes to avoid when developing browser extensions for Chrome, Firefox, and Safari.

Overview

This skill catalogs anti-patterns that lead to:

• Poor performance and memory leaks
• Store rejections (Chrome Web Store, AMO, Safari App Store)
• Security vulnerabilities
• Cross-browser incompatibilities
• Poor user experience

This skill covers:

• Performance anti-patterns
• Store rejection reasons
• API misuse patterns
• Manifest configuration mistakes
• Content script pitfalls