All glossary entries

Page speed (A-lcp)

Largest Contentful Paint (mobile lab)

This page explains what this scan check measures. It is not legal advice or a compliance verdict.

What this check is

Largest Contentful Paint (LCP) measures how long it takes the largest visible content to render in a mobile lab run.

Why WordPress sites show it

Hero images, web fonts, and render-blocking theme CSS are common LCP drivers on WordPress landing pages.

Realistic impact

Slow LCP means the main content appears late in the lab run. Real-user experience can differ, but late paint is a practical speed risk for paid landing pages.

How to verify a fix

After optimizing the hero and critical CSS path, re-scan and compare the mobile LCP value on the same URL.

Open the step-by-step fix guide

See this check on your site

Run a free scan. If this check appears in your report, you will see the live status for your URL.

Run a free leak scan