Free PageSpeed
& Core Web Vitals Audit
Real Lighthouse audit on any URL. Get Performance, Accessibility, SEO, and Best Practices scores plus full Core Web Vitals (LCP, FCP, CLS, INP) in seconds.
Frequently asked questions
What are Core Web Vitals?
Core Web Vitals are three Google-defined metrics that measure real-world user experience: LCP (Largest Contentful Paint — how fast the main content loads), CLS (Cumulative Layout Shift — how stable the layout is during load), and INP (Interaction to Next Paint — how quickly the page responds to user input). Google uses them as a ranking signal in search results.
Is this PageSpeed test free?
Yes, 100% free with no signup. Tests are powered by Google's official PageSpeed Insights API.
What scores should I aim for?
Google considers 90–100 as "Good" (green), 50–89 as "Needs Improvement" (orange), and 0–49 as "Poor" (red). LCP should be under 2.5s, CLS under 0.1, INP under 200ms.
Does this run a real Lighthouse audit?
Yes. We call Google's official PageSpeed Insights API which executes a real Lighthouse audit in a Google data center. You get the same numbers Google sees when ranking your page.
What's the difference between this and the full MetricVault platform?
This page is one tool. The full MetricVault AI dashboard has 30+ tools including AI Visibility tracking, Domain Overview, Backlink Profile, Keyword Magic, and more. Sign up free for 9 more free SEO tools plus 5 premium reports a month — no credit card.