Free tool · real Google Lighthouse data

See exactly how your website is performing.

Enter any public URL and we'll run a real Google PageSpeed Insights test — the same engine behind Lighthouse in Chrome DevTools — for mobile and desktop. Real scores, real Core Web Vitals, nothing simulated.

We'll add https:// automatically if you leave it off.

Test on

Your browser sends this URL directly to Google's PageSpeed Insights API (for a live Lighthouse test) and Chrome UX Report API (for real-user Core Web Vitals, when available) — Swiftly doesn't store your URL or these results on our servers. Lighthouse runs one live test per device (not an averaged multi-run score), so lab numbers can vary slightly between runs — that's normal.

How this tool works

No account, no fake quiz, no invented scores — just Google's own data, plainly explained.

01

You give us a URL

Any public website address. No signup needed.

02

We ask Google

Your browser calls Google's PageSpeed Insights API directly — the same engine behind Lighthouse in Chrome DevTools.

03

Real visitors, too

When enough real Chrome users have visited recently, we also show genuine field data from the Chrome UX Report — not just a lab simulation.

04

You get a real report

Every score and metric here comes straight from Google's response. Nothing is estimated or randomized.

What this checks — and what it doesn't

This free tool runs a genuine single-page Lighthouse test via Google's PageSpeed Insights API (real Performance, Accessibility, Best Practices and SEO scores, plus supporting lab performance metrics) and queries the Chrome UX Report API directly for real Core Web Vitals field data — real LCP, INP and CLS from actual Chrome users — when it's available for your site.

What it doesn't do yet: crawl multiple pages, check HTTP security headers, validate structured data beyond Lighthouse's own checks, or verify broken links sitewide — those need a backend crawler, which is on our roadmap.