What problem does it solve?
Diagnose and remediate front-end performance problems that make web pages feel slow, janky, or heavy, focusing on measurable improvements in load time, rendering, animations, images, and bundle size.
Core Features & Use Cases
- Performance Assessment: Measure Core Web Vitals (LCP, INP/FID, CLS), Time to Interactive, First Contentful Paint, bundle size, runtime frame rates, memory, and network waterfalls.
- Targeted Optimizations: Actionable guidance for image formats and sizing, code-splitting and lazy loading, CSS critical-path and containment, font loading strategies, and animation rendering techniques.
- Verification & Monitoring: Recommendations for profiling (Chrome DevTools, Lighthouse, WebPageTest), bundle analysis, real-user monitoring, and before/after validation on varied devices and network conditions.
- Use Case Example: Optimize a slow mobile-first homepage by reducing hero image payload, splitting vendor code, deferring non-critical CSS, and validating LCP and INP improvements on low-end devices.
Quick Start
Use the optimize skill to audit my site's homepage, prioritize fixes, and get step-by-step recommendations to improve Core Web Vitals and reduce bundle size.