LCP

LCP (Largest Contentful Paint) measures how long it takes for the main content of a page to appear - typically the largest image or text block in the viewport. It is one of Google's .

Up to 2.5 seconds is considered good; beyond 4 seconds is poor. Slow LCP usually means a heavy hero image, render-blocking scripts or styles, or a server that takes too long to respond. Silktide measures LCP in a controlled lab load and shows which element is the largest so you know what to speed up.