Speed Insights Checker
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Performance
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Accessibility
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Best Practices
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SEO
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Core Web Vitals & Load Metrics
| Largest Contentful Paint (LCP) | -- |
|---|---|
| First Contentful Paint (FCP) | -- |
| Cumulative Layout Shift (CLS) | -- |
| Total Blocking Time (TBT) | -- |
| Speed Index | -- |
Real data straight from Google's own PageSpeed Insights (Lighthouse) API — the same engine behind pagespeed.web.dev. Requires
PAGESPEED_API_KEY in .env (free, 25,000 checks/day from Google). Runs directly from your browser to Google (not through our server) since a live Lighthouse audit takes longer than most web hosts allow a single server request to run.