Website Speed Checker
Enter a URL to check its performance score, SEO score, and Core Web Vitals — powered by Google PageSpeed Insights.
About this tool
Check any website's performance score, SEO score, accessibility score, and Core Web Vitals (First Contentful Paint, Largest Contentful Paint, Total Blocking Time, Cumulative Layout Shift, Speed Index), powered by Google's own PageSpeed Insights API — the same engine behind Google Search Console's performance reports.
These scores reflect a mobile-network simulation by default, since Google prioritizes mobile performance in search ranking — a site can feel fast on a desktop broadband connection while still scoring lower here, which is expected and worth knowing when interpreting the results. Treat Core Web Vitals as a practical checklist (fix the worst-scoring metric first) rather than chasing a perfect 100 across every category.
How to use it
- Enter the full URL of the page you want to check.
- Click Check Speed.
- Review the performance, SEO, and accessibility scores.
- Check the individual Core Web Vitals metrics below the scores.
Example uses
- Check your own website's mobile performance score before a launch.
- Compare Core Web Vitals before and after a hosting or theme change.
- Spot-check a competitor's site loading speed.
- Diagnose which specific Core Web Vital is dragging down a page's score.
Frequently asked questions
Why does my site score lower here than it feels when I browse it?
Scores reflect a simulated mobile connection by default, which is typically slower than desktop broadband — a site can feel fast to you while still scoring lower here, which is expected behavior matching how Google evaluates mobile performance.
Should I aim for a perfect 100 score?
Not necessarily — treat these scores as a prioritized checklist. Fixing the worst-scoring Core Web Vital first usually matters more in practice than chasing a perfect number across every category.
Does this check backlinks or keyword rankings?
No — this specifically covers performance, Core Web Vitals, and basic accessibility/SEO signals. For on-page SEO issues specifically, use the SEO Analyzer tool instead.