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Core Web Vitals explained for business owners

What LCP, INP, and CLS measure, why Google cares about experience signals, and what to ask your developer or agency to improve.

The three headline metrics

Largest Contentful Paint (LCP) reflects perceived load speed for main content. Interaction to Next Paint (INP) captures responsiveness to clicks and taps. Cumulative Layout Shift (CLS) tracks visual stability as the page renders.

They are not the whole story of UX, but they are useful guardrails that correlate with frustration or confidence.

Why they overlap with SEO

Search systems want to send users to pages that load and respond reliably, especially on mobile networks. Chronic performance issues can cap rankings even when copy is strong.

Fixes often involve image discipline, font loading, deferring non-critical scripts, and server or CDN configuration — not only “more keywords”.

What to request in a brief

Ask for field data where possible (Search Console, RUM), not only one-off lab scores. Set budgets for key templates: home, service, and conversion pages.

Pair performance work with content priorities so you are not optimising pages users never reach.

Questions about your site?

Tell us your goals — we reply with honest fit and next steps.

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