Core Web Vitals are key metrics Google uses to measure user experience: LCP (Largest Contentful Paint) for loading speed, FID (First Input Delay) for interactivity, and CLS (Cumulative Layout Shift) for visual stability.
To improve LCP, optimize images, use a CDN, and reduce server response time. For FID, minimize JavaScript execution and break up long tasks. Fix CLS by reserving space for images and ads and avoiding inserting content above existing content.