LCP measures the time from when a page starts loading to when the largest visible content element (often a hero image or heading block) is rendered. A good LCP is 2.5 seconds or less. Common fixes include optimising images, reducing render-blocking resources and improving server response time.
Largest Contentful Paint (LCP)
Definition
A Core Web Vital measuring how long the largest visible element takes to render. Aim for 2.5s or less.
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Pillar Guide
Core Web Vitals — Complete Guide