Performance

Core Web Vitals

Runs Google's PageSpeed Insights against a URL and surfaces LCP, CLS, INP, and overall performance score.

No check run yetEnter a URL above to run it through PageSpeed Insights.

Uses Google's public PageSpeed Insights API. For heavier use, set a PAGESPEED_API_KEY environment variable (free from Google Cloud Console) to raise the rate limit — without one, Google's shared quota applies and checks may occasionally be rate-limited.