webperf-core-web-vitals
WebPerf: Core Web Vitals
JavaScript snippets for measuring web performance in Chrome DevTools. Execute with mcp__chrome-devtools__evaluate_script, capture output with mcp__chrome-devtools__get_console_message.
Scripts
scripts/CLS.js— Cumulative Layout Shift (CLS)scripts/INP.js— Interaction to Next Paint (INP)scripts/LCP-Image-Entropy.js— LCP Image Entropyscripts/LCP-Subparts.js— LCP Subpartsscripts/LCP-Trail.js— LCP Trailscripts/LCP-Video-Candidate.js— LCP Video Candidatescripts/LCP.js— Largest Contentful Paint (LCP)
Common Workflows
Complete Core Web Vitals Audit
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