SEOApril 20, 2026· 5 min read

Core Web Vitals: the speed Google turns into clients

A site one second slower means fewer enquiries and lower Google rankings. We explain Core Web Vitals in plain language and show how speed converts into sales.

Core Web Vitals: the speed Google turns into clients

Google has been repeating the same thing for years: fast sites win. Core Web Vitals is how it measures that - three numbers that decide your search ranking and whether a client even waits for your offer to load.

The three numbers you need to know

What speed does to sales

Google's and Deloitte's research agree: a 0.1s speed improvement lifts conversion by ~8%, and every second of delay can cost double-digit abandonment. Premium clients are even less patient - a slow site undermines brand credibility before they read the first sentence.

Speed isn't a technical feature. It's the first impression, a ranking signal and a conversion lever in one.

Why templates lose this race

WordPress themes and site builders load dozens of scripts “just in case” - carousels, animation libraries, trackers. That ballast can't be switched off without breaking the site. That's why a typical template scores 40–60 in PageSpeed, while sites written from scratch hit 100/100 - like our Nordhaus build, loading in 0.4s across three continents.

How to check your site in 30 seconds

Go to pagespeed.web.dev, enter your address and look at the mobile score - that's the one that counts. Below 70? You're losing rankings and clients every day. That audit is where we start every project - and we show it to the client before and after launch.

R

Zespół Rectra Solutions

Technology studio

We build fast, custom Next.js websites and apps with AI agents and sales automation - for businesses that want premium clients.

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