Technical SEO

Core Web Vitals: The Performance Metrics That Rank and Convert

Webamazee Team Jun 12, 2026 9 min read

Largest Contentful Paint, INP and CLS explained — and how to fix them.

01

What Core Web Vitals actually measure

Core Web Vitals are Google's metrics for user experience: how fast content loads, how quickly the page responds and how stable the layout is. They directly influence rankings and, more importantly, how users experience your site.

02

LCP — speed of the main content

Largest Contentful Paint measures when the main content becomes visible. Optimising images, server response and render-blocking resources moves your LCP into the green — which usually means happier users and better rankings.

03

INP — responsiveness

Interaction to Next Paint measures how quickly the page responds to user input. It replaces FID as the responsiveness metric. Reducing long tasks and optimising JavaScript keeps your site feeling instant.

04

CLS — visual stability

Cumulative Layout Shift measures how much the page moves as it loads. Reserve space for images and embeds to avoid elements jumping around — a common cause of frustration and accidental clicks.

Enjoyed this article?

Get more actionable insights like this from the Webamazee team.

Free 30-min Strategy Call

Ready to grow with AI-powered marketing?

Tell us about your business and we'll reply with a personalised roadmap — free, no strings attached.

  • Free personalised roadmap
  • Reply within 24 hours
  • No lock-ins
Get Your Free Proposal