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Launch offer: 50% off your first month when you sign up after your free scan.Scan my site →

50% off your first month · Scan my site →
Free site audit

50% off your first month when you sign up after your free scan.

Free site audit

Website speed and Core Web Vitals audit

Measure LCP, CLS and TBT on mobile and desktop on your home page, one page per template and the pages you mark as important, and check every other page for server response, weight and render-blocking files.

Free 20-page scan · No sign-up
Speed & Core Web Vitals

Google uses Core Web Vitals to rank pages

A slow page loses visitors before it even loads. We measure your home page, one page per template and the pages you mark as important with Lighthouse, on mobile and desktop. On every other page we check response time, weight and render-blocking files, and tell you which file or element is to blame.

LCP 3.1 sLCPCLSTBTMobileDesktop

What we check

Across every page, on mobile and desktop.

Across every page, on mobile and desktop.

  1. LCPHow long the main content takes to appear, and which element is holding it back.
  2. CLSWhich elements shift while the page loads, and why.
  3. TBTHow long the page stays blocked, unable to respond, while it loads.
  4. Unused JavaScript and CSSCode that gets downloaded and never runs, file by file.
  5. Heavy imagesImages you could serve as WebP or AVIF, and how much you’d save.
  6. Server & cachingServer response time, compression and browser caching.

How it shows up in your report

Every issue with its exact location, why it matters and how to fix it.

HighLCP of 3.1 s on mobile
Where/home · img.hero-banner (1.1 MB)
Why it mattersIt’s over the 2.5 s Google considers good, and it affects rankings.
How to fix itPreload the hero image, serve it as AVIF and set its width and height.

FAQ

How is this different from PageSpeed Insights?

We measure your home page’s speed with PageSpeed Insights, so you see the same numbers Google does; on a paid plan, also one page per template and the pages you mark as important. On top of that we check your pages — 20 in the free scan, every page on a paid plan —, catch what only shows up when you compare them, show you real-user data and tell you what to fix first.

Do you measure on mobile and desktop?

Yes — every audit analyzes both devices separately.

Is this real user data?

Both, kept apart. The scores and Lighthouse metrics are lab data — repeatable and comparable between audits. And if Google has real-visit data for your site, from the Chrome UX Report, we show it separately, INP included.

Do you measure INP?

Yes, when there’s real-visit data. INP can only be measured with people using the site: we take it from Google’s Chrome UX Report, which has it if your site gets enough traffic. If it doesn’t, we show you TBT, the lab metric that comes closest to it.

How often do you re-measure?

Depending on your plan: monthly, weekly or daily, with alerts if a metric gets worse.

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Try it on your own site

We’ll scan 20 pages free in under two minutes — no sign-up.

  • ✓ Nothing to install
  • ✓ Mobile & desktop
  • ✓ 14-day money-back guarantee