Core Web Vitals Optimization

Understanding Core Web Vitals

Core Web Vitals are Google's metrics for measuring user experience. The three key metrics are Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS).

Improving Largest Contentful Paint

Optimize your largest image or text block by implementing proper image optimization, using modern formats like WebP, and implementing lazy loading for off-screen content.

Reducing First Input Delay

Minimize main thread work by reducing JavaScript bundle sizes, breaking up long tasks, and optimizing your server response times.

Minimizing Cumulative Layout Shift

Reserve space for elements that load asynchronously, avoid inserting content above existing elements, and use font-display: swap to prevent layout shifts from web fonts.