Core Web Vitals are three metrics Google uses to measure page experience: Largest Contentful Paint (loading), Interaction to Next Paint (responsiveness), and Cumulative Layout Shift (visual stability). They're measured on real visits, not just in a lab.
They influence both user experience and, as a tie-breaker, search ranking. Slow or unstable pages lose visitors before they even see your content, so improving them helps conversions as much as SEO.
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