Largest Contentful Paint (LCP)
LCP measures the render time of the largest content element visible in the viewport. The LCP element is typically a hero image, video poster, or large text block. Good threshold: ≤2.5 seconds, needs improvement: 2.5-4s, poor: >4s.
⚡Why It Matters
LCP is the most important Core Web Vital for perceived load speed. Pages with LCP ≤2.5s provide a good loading experience for 75% of users.
🔍How AiSEO Checks
AiSEO measures LCP via PageSpeed Insights API and CrUX, identifies the LCP element, and suggests optimizations (preload images, optimize server response, lazy load below-fold).