SEO · Updated 1 August 2026

Core Web Vitals

Core Web Vitals is Google's set of metrics measuring a site's loading speed, visual stability and responsiveness. Google uses these numbers as one ranking factor in search results.

Also known as: Site speed metrics

What the metrics mean in practice

How fast the page's main content becomes visible, whether the layout stays still while loading (so you don't accidentally tap the wrong thing), and how quickly the page responds to clicks.

Why a heavy platform performs worse

Heavy content management systems and plugins slow a site down, which shows up directly as worse scores. A lightweight build usually starts from a better position here.

Written by Eetu Huotari

Related terms

Responsive design Responsive design means the site automatically adapts to screen size and works equally well on a phone, tablet and desktop. It isn't an add-on, it's the baseline for any modern website.SEO SEO means building a site so Google understands what the business does and shows it to people searching for it. It isn't a single action, it's an ongoing property of the site.Static site A static site is pre-built ahead of time and doesn't pull content from a database on every load. Pages load fast and the platform is light to maintain, since there's no heavy CMS running behind it.

All terms