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Website Speed and Core Web Vitals

Measured on a real phone on mobile data.

Core Web Vitals Lighthouse CrUX Nginx

Website Speed and Core Web Vitals Website speed optimization makes a page show its content sooner and stop shifting while it loads. Google measures this as Core Web Vitals: LCP, INP and CLS.

A lab score of 90 means nothing if the site takes six seconds on a mid range Android on a 4G connection in the evening. We work against field data from your real visitors.

What is in it

  • 01Field metrics from your own traffic, not one synthetic test
  • 02Images converted, sized and served at the size the layout uses
  • 03Fonts, scripts and third party tags cut back to what earns its weight
  • 04Caching and server response time fixed, including the slow database query
status.demo / healthDemo data
1.2sLCP
0.02CLS
186msINP
Deploy pipelineshipped
build
test
scan
ship
Response timedemo ยท last 24 h

Illustrative screen. Field metrics, a deploy pipeline and a response time graph. Sample numbers, not a measurement of any real site.

What happens, in order.

There is no rate card on this page. The honest price depends on what we find in your current system, and we would rather look first than publish a number we would have to take back.

  • Scope in writing before any code01
  • Billed on completion, stage by stage02
  • Source code in your repository03
  • Hosting and domain in your name04
  1. 01

    A call, then a scope

    Half an hour on the phone, then a written scope with stages, timeline and price. You can take that document to anyone else for a second quote.

  2. 02

    Stage by stage

    Each stage is fixed in scope and billed on completion. If you want to stop after stage two, you stop after stage two and keep what is built.

  3. 03

    Handover that means something

    Source code in your repository, hosting and domain in your name, a written note of how it works, and training for the people who will use it.

Read next

Website Speed and Core Web Vitals, in short

01Our site feels fast to us. Why does the test disagree?
Because you are testing on a good laptop on office internet. The measurement that counts is a mid range Android phone on mobile data, which is what most of your visitors actually hold.
02What usually makes the biggest difference?
Images, nearly always. Photographs uploaded straight from a camera, served at full size, outweigh every other problem on most sites. After that it is third party scripts.
03Does speed affect search ranking?
It is one signal among many, and relevance matters more. The stronger argument is that people leave slow pages, so you lose the enquiry whatever the ranking.

Website Speed and Core Web Vitals, for your business.

Tell us what you are running now and what is going wrong with it. A few lines is enough to start.

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