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Website Speed Test (PageSpeed & Core Web Vitals)

Measure your site's performance and Core Web Vitals, and get actionable recommendations to make it faster — for both users and search engines.

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What the tool checks

  • Core Web Vitals — LCP, CLS, and INP scores
  • Page load time and total page size
  • Speed improvement opportunities (images, JavaScript, CSS)
  • Render-blocking scripts and unused resources
  • Performance score with prioritized fixes

Why it matters

Page speed is a confirmed Google ranking factor — Core Web Vitals are part of the page experience signal. It also directly impacts conversions: every additional second of load time increases bounce rate. Slow sites lose both rankings and customers, especially on mobile connections.

Detailed guide in the help center

Frequently asked questions

What are Core Web Vitals?

Google's set of user experience metrics: LCP (Largest Contentful Paint — loading speed), CLS (Cumulative Layout Shift — visual stability), and INP (Interaction to Next Paint — responsiveness).

Is page speed a ranking factor?

Yes. Core Web Vitals are part of Google's page experience ranking signals, particularly influential when content quality is otherwise comparable between competing pages.

What most commonly slows websites down?

Unoptimized images, excessive JavaScript, slow hosting or server response times, and missing browser caching are the most frequent culprits.

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