web-perf

Diagnose slow web page performance by measuring Core Web Vitals like FCP, LCP, TBT, CLS, and Speed Index to pinpoint loading and rendering bottlenecks. The audit traces render-blocking resources and late network requests to prioritize fixes with measurable impact on your page speed.

Find render-blocking resources by tracing network requests and dependency chains to detect missing preloads, caching weaknesses, and late-discovered assets. This network analysis identifies critical content paths delaying your page load so you can optimize request prioritization and resource delivery.

Yes, you can use Chrome DevTools to audit network requests and generate an accessibility snapshot. This process enumerates network details to uncover dependency bottlenecks and surfaces A11y tree gaps, complementing your performance improvements with high-level accessibility checks.

Measure layout shift and loading stability by running a performance profiling audit on your URL to evaluate Core Web Vitals. This traces Cumulative Layout Shift (CLS) alongside rendering and networking signals to identify why pages load slowly or shift unexpectedly during navigation.

You need the Chrome DevTools MCP tool available to execute page navigation, performance tracing, insight analysis, and accessibility snapshot generation. This environment enables the automated measurement of Core Web Vitals and the enumeration of network requests required for your audit.

A poor Largest Contentful Paint (LCP) score can result from render-blocking resources, late-discovered request chains, or caching weaknesses delaying critical content delivery. A performance audit measures these networking and rendering signals to identify bottlenecks beyond image optimization affecting your page load.