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PerformanceFree tool

Free page check

Run Google Lighthouse on one page, on mobile and desktop, and see its scores, Core Web Vitals and what to fix first.

  • One page
  • mobile and desktop
  • run by Google Lighthouse
  • no account

Result

Resultnothing checked yet

Paste a page address above

Google runs Lighthouse on mobile and desktop at the same time.

  • The four Lighthouse scores
  • LCP, CLS, Total Blocking Time and FCP on mobile and desktop
  • Real-visitor Core Web Vitals when Google has them
  • The top performance fixes
  • Failed accessibility, best-practice and SEO checks

What it checks

What this check covers, and what it doesn’t.

A quick look at one page. For a whole site, see below.

It checks

  • The four Lighthouse scoresYes
  • LCP, CLS, Total Blocking Time and FCP on mobile and desktopYes
  • Real-visitor Core Web Vitals when Google has themYes
  • The top performance fixesYes
  • Failed accessibility, best-practice and SEO checksYes

It doesn’t

  • Other pages of your siteNo
  • Broken linksNo
  • Content that is missing from a pageNo
  • Tests on a schedule, or a historyNo
  • INP in the labNo
Why it matters

One test, four views.

Speed, accessibility, best practices and SEO basics of one page, from the same Lighthouse test that Google’s PageSpeed Insights runs.

How to use it

  1. Paste a page address

    Any public page. No account needed.

  2. Select Check page

    Google runs Lighthouse on mobile and desktop at the same time.

  3. Fix the slowest metric first

    Then check the page again.

Every plan

Test your key pages on a schedule

Performance Boost runs Lighthouse on mobile and desktop, shows Core Web Vitals field data and alerts you when a page drops below its own average.

  • This free toolOne page · mobile and desktop, on demand
  • Performance BoostUp to 10 pages per monitor, on a schedule
Start for freeAbout Performance Boost
FAQ

Free page check, answered.

Anything else? Talk to us.

Is the page check free?

Yes. You can run it without an account or an email address.

How often can I run it?

Up to 10 checks an hour. When you reach the limit, the page tells you how long to wait.

Why are mobile and desktop scores different?

Lighthouse tests mobile on an emulated phone with a slower processor and network, so the same page usually scores lower on mobile.

Why is my score different from last time?

Each check is one Lighthouse test per device on Google’s servers. Network and server conditions change, so scores move a little between runs.

Where do the real-visitor numbers come from?

From Google’s Chrome UX Report: how Chrome users experienced the page over the last 28 days. Search Console’s Core Web Vitals report uses the same data. When Google has no data for the page, the check shows the whole site’s; when it has neither, it says so.

Does it find broken links?

No. It tests one page with Lighthouse. To check the links on one page, use the Broken Link Checker. To check every page of your site, use Site Crawler.

Is my result saved?

No. PerfBee shows it on this page and does not keep it.

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