CORE WEB VITALS

Core Web Vitals are three real-world page-experience metrics that Google uses as ranking signals: LCP (Largest Contentful Paint, how long until the main content is visible, target under 2.5s), INP (Interaction to Next Paint, how responsive the page feels, target under 200ms), and CLS (Cumulative Layout Shift, how much the page jumps around as it loads, target under 0.1). Together they measure whether a page loads quickly, responds quickly, and stays stable visually. Google reports them in Search Console and the Chrome User Experience Report (CrUX), and they directly affect rankings for competitive queries.

How it works

Each Core Web Vital is measured at the 75th percentile of real visitors over a 28-day window. A site passes the assessment when all three metrics are in the "good" range for at least 75% of page views. Google publishes the data per origin and per URL group in Search Console.

Why it matters

Failing Core Web Vitals depresses rankings for competitive queries and signals a slow or jarring user experience. Improving them usually means optimising images, eliminating render-blocking scripts, fixing layout-shifting elements, and lowering server response times. A good host with a CDN does much of this for you.

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Frequently Asked Questions