Page Speed Checker

Test Core Web Vitals and Lighthouse scores for any URL. Mobile and desktop strategies.

URL to test

Strategy

📱 Mobile

🖥️ Desktop

Results are powered by Google's PageSpeed Insights API. For best accuracy, test from a stable connection and run the test multiple times.

Page Speed Checker

The Page Speed Checker measures the four Lighthouse score categories — Performance, Accessibility, Best Practices, and SEO — using Google's PageSpeed Insights API.

Core Web Vitals thresholds

LCP (Largest Contentful Paint): ≤ 2.5s good, ≤ 4.0s needs improvement, > 4.0s poor
CLS (Cumulative Layout Shift): ≤ 0.1 good, ≤ 0.25 needs improvement, > 0.25 poor
INP (Interaction to Next Paint): ≤ 200ms good, ≤ 500ms needs improvement, > 500ms poor

Why Core Web Vitals matter

Since 2021, Google uses Core Web Vitals as a ranking signal. Sites failing the thresholds may be demoted in search results, especially on mobile.