Sign In

Website Speed Test

Test any website's loading speed using Google PageSpeed Insights. Get Core Web Vitals, performance scores, and actionable optimization tips.

Powered by Google PageSpeed Insights API
CORE WEB VITALS 1.2s FCP 2.8s LCP 0.04 CLS

Core Web Vitals

Get FCP, LCP, TBT, CLS, Speed Index, and Time to Interactive — the metrics Google uses for ranking.

78 92 ⇄

Mobile & Desktop

Toggle between mobile and desktop analysis. See how your site performs on different devices.

⚡ Reduce unused JavaScript -1.2s ⚡ Serve images in WebP -0.8s ⚡ Defer offscreen images -0.5s TOTAL SAVINGS: 2.5 SECONDS

Optimization Tips

Get actionable opportunities and diagnostics from Lighthouse to improve your loading speed.

LIGHTHOUSE 96 91 78 100 Perf A11y BP SEO Powered by Google

Google-Powered

Results come directly from Google PageSpeed Insights API — the same engine behind Lighthouse audits.

Why Website Speed Matters for SEO

Google uses Core Web Vitals as a ranking signal. A faster site means better rankings, lower bounce rates, and higher conversions.

Core Web Vitals

What Are Core Web Vitals?

Core Web Vitals are a set of real-world, user-centered metrics that quantify key aspects of the user experience: loading performance (LCP), interactivity (TBT/INP), and visual stability (CLS).

  • LCP should be under 2.5 seconds
  • CLS should be under 0.1
  • Total Blocking Time under 200ms
  • Google uses these for ranking since 2021
Performance

How Speed Affects Revenue

Studies show that a 1-second delay in page load time can reduce conversions by 7%. Amazon found that every 100ms of latency cost them 1% in sales.

  • 53% of mobile users abandon sites that take over 3s to load
  • Faster pages have 2x higher ad viewability
  • Speed is a direct Google ranking factor
  • Better UX leads to lower bounce rates
Optimization

Quick Wins for Speed

Most sites can improve significantly with a few targeted optimizations. Focus on the biggest opportunities first.

  • Compress and serve images in WebP/AVIF format
  • Enable browser caching and CDN delivery
  • Minimize render-blocking JavaScript
  • Use lazy loading for below-the-fold content

Frequently Asked Questions

What is a good PageSpeed score?
Scores 90–100 are considered good (green). 50–89 need improvement (orange). Below 50 is poor (red). Most websites score between 40–70 on mobile, so don't panic if your score isn't perfect.
Why is my mobile score lower than desktop?
Mobile testing simulates a mid-range device on a 4G connection (Moto G Power with throttled CPU and network). Desktop testing uses a fast connection with no CPU throttling, so scores are naturally higher.
Where does the data come from?
Results come directly from the Google PageSpeed Insights API, which runs Lighthouse audits on the URL you provide. This is the same engine used by Chrome DevTools and web.dev.
Is this free?
100% free, no sign-up required. We use the public Google PageSpeed Insights API to analyze any URL on your behalf.