Zhang Lu.
← Skills

/web-perf

Analyze web performance with Chrome DevTools MCP. Measure Core Web Vitals (LCP, INP, CLS) plus supporting metrics (FCP, TBT, Speed Index), and hunt for render-blocking, network dependency chains, layout shifts, caching and accessibility issues.

source: local ✎ handwritten

Purpose

Analyze web performance with Chrome DevTools MCP.

What it measures

  • Core Web Vitals: LCP, INP, CLS
  • Supporting metrics: FCP, TBT, Speed Index

What it looks for

  • Render-blocking resources
  • Network dependency chains
  • Layout shifts
  • Caching issues
  • Accessibility gaps

When to use

Auditing, profiling, debugging, or optimizing page load performance, Lighthouse scores, or site speed.

Knowledge bias

Lean toward retrieving the latest docs rather than relying on pretrained knowledge.