Performance check
Enter the address of your website. We load it, read technology and structure, and let Google measure it on a simulated phone. That takes about half a minute, costs nothing and needs no sign-up.
We only measure publicly reachable sites. The address is sent to the Google PageSpeed API, see the privacy policy.
Performance check
Google is measuring.
- Loading the page
- Reading technology and structure
- Checking readability for AI
- Google starts the phone
- Measuring load time
- Compiling the result
Google's measurement usually takes 15 to 40 seconds.
The essentials
Where your site stands today.
- Speed
How fast does the site respond?
What we saw in detail
- Ballast and third parties
What loads along that nobody sees?
What we saw in detail
- Visibility in Google
Does Google understand what this is about?
What we saw in detail
- Readability for AI
Can ChatGPT name your company?
What we saw in detail
Google's measurement
How Google sees your site.
Lighthouse is Google's measuring tool. It loads your site on a simulated phone on a mobile network and rates it in four areas from 0 to 100. The same values feed into your ranking in Google.
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Speed
How fast the site is usable on a phone. The most important value for visitors and for Google.
High-performance site: 100
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Accessibility
Whether everyone can use the site, including with a screen reader or large text. Google counts that too.
High-performance site: 100
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Technology and security
Whether the site is built to Google's rules: encryption, no outdated libraries, no errors.
High-performance site: 100
–
Google basics
Whether Google can read and classify the site: title, description, links, mobile display.
High-performance site: 100
The measurements, translated.
Behind the scores are five measurements. Here is what they mean, why they count, and what value a high-performance site by us achieves.
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When is the main thing visible?
LCP: The time until the largest element in view is there, usually the main image or the headline. That is the moment the visitor thinks: the page is here. Google rates up to 2.5 seconds as good.
High-performance site: under 1 second
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Does the site react instantly to taps?
Blocking time: How long the page is still busy with scripts after loading and does not react to clicks. Menus that do not open, buttons that do not respond: that is what high blocking time feels like. Google: good up to 200 milliseconds.
High-performance site: under 100 milliseconds
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Does the page jump while loading?
Layout shift: How much content shifts while loading, for example because images or banners claim space afterwards. Shifting pages cause wrong clicks and look unfinished. Google: good up to 0.1.
High-performance site: 0
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How much does the phone have to load?
Data volume: Everything the browser downloads for the start page: images, scripts, fonts, styles. On a mobile network every megabyte costs seconds. From 1.5 megabytes it becomes clearly noticeable.
High-performance site: under 500 kilobytes
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How many third-party servers are involved?
Third-party requests: Requests to servers that are not yours: Google Fonts, trackers, maps, videos, ad networks. Every third-party server costs a connection, waiting time and usually a cookie banner.
High-performance site: 0
Real users (Chrome UX Report, 28 days)
Above, the worst case: a simulated slow phone in the lab. Here, everyday life: what real Chrome visitors experienced over the last 28 days, usually on better devices and networks. That is why the lab can say "critical" while this says "good".
There is no user data for this site; too few Chrome users visit it.
Next step
Let's talk about the numbers.
Send us the result with one click. We tell you honestly what can be fixed with little effort and what only a rebuild brings.
Next step
Ready formore performance?
Send us the address of your website or tell us what you have in mind. You get an honest assessment and a clear quote.