web-performance-optimization
Installation
SKILL.md
Iron Law
NO PERFORMANCE OPTIMIZATION WITHOUT MEASURING FIRST — run Lighthouse and ng build --stats-json before writing a single optimization
Profile before optimizing. Every change must have a before/after metric. Do not optimize based on guesswork.
Web Performance Optimization — Angular 21.x
Overview
Help developers optimize Angular 21.x SPA performance to improve user experience, SEO rankings, and Core Web Vitals scores. This skill provides systematic approaches to measure, analyze, and improve loading speed, runtime performance, and bundle size — all grounded in Angular-native patterns (signals, @defer, NgOptimizedImage, lazy routes, SSR TransferState).