Performance
Largest Contentful Paint (LCP)
A Core Web Vital measuring how long the largest image or text block in the first screen takes to appear: the closest single measure of when a page feels loaded.
The LCP element is usually a hero image, a video poster or a large headline. The clock starts when the visitor begins loading the page and stops when that element is painted, so LCP captures server response, downloads and rendering together.
A good LCP is 2.5 seconds or less at the 75th percentile of visits, on mobile and desktop alike (web.dev). Slow scores usually come from a slow server response, render-blocking CSS and JavaScript, a hero image that is oversized or discovered late, or web fonts that hold back text.
To fix it, serve the hero image at the right size in a modern format and mark it as high priority (never lazy-load it), cut or defer render-blocking resources, and reduce Time to First Byte with caching or static pages. Check field data in Search Console or PageSpeed Insights, because a lab test on a fast connection can hide the problem.
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