Largest Contentful Paint (LCP)

A Core Web Vitals metric measuring when the largest content element becomes visible, typically a hero image or heading. Good LCP is under 2.5 seconds. This metric reflects perceived load speed—how quickly visitors feel the page is ready. Improving LCP involves optimising server response, preloading critical assets, using efficient image formats, and avoiding lazy loading above-the-fold content. It is often the most impactful performance metric to improve.