KnowledgeLargest Contentful Paint
LCP · How quickly the largest visible content element appears on screen.
Understand LCP in context.
Simply explained explanation
How quickly the largest visible content element appears on screen.
Professional explanation
Core Web Vital measuring the loading time of the largest rendered image or text block within the viewport.
Analytical explanation
High LCP can stem from slow server response, render-blocking assets, unoptimized hero images or poor caching. Evaluate real-user mobile and desktop data.
Technical explanation
Largest Contentful Paint is measured in seconds from navigation; the commonly cited “good” threshold is ≤2.5 s at the 75th percentile of real-user experiences.
Four complementary explanations — choose your level. Technical definitions are platform-specific where noted.
↗ How to use it
Check the LCP resource and server timing.
⚠ Common interpretation mistake
Lab scores and real-user field data can differ.