Core Web Vitals are a set of specific factors that Google considers important in a webpage's overall user experience. The three Core Web Vitals are: Largest Contentful Paint (LCP): Measures loading performance. To optimise: Improve server response times Optimise and compress images Implement lazy loading for below-the-fold content First Input Delay (FID): Measures interactivity. To optimise: Minimise JavaScript execution time Break up long tasks Optimise your page for interaction readiness Cumulative Layout Shift (CLS): Measures visual stability. To optimise: Use set size attribute dimensions for images and videos Ensure ad elements have a reserved space Add new UI elements below the fold