Largest Contentful Paint (LCP)
How long it takes the biggest visible element on a page to finish loading.
What it means
Largest Contentful Paint measures how long it takes for the largest piece of content on screen — usually a hero image, banner, or block of text — to fully render after someone lands on your page. It's meant to capture when the page actually feels "loaded" to a real visitor, not just when the browser technically finishes.
Why it matters
A slow LCP is one of the fastest ways to lose a visitor before they see anything worth staying for, and Google uses it as a ranking signal. A "good" score is 2.5 seconds or less; anything past 4 seconds is considered poor.
ask datanephew
Can datanephew tell me my LCP score?
Yes — ask it to run a page speed check and it will report LCP along with the other Core Web Vitals for that page.
What's usually causing a slow LCP?
Ask datanephew to check — it commonly comes down to a large unoptimized image, slow server response, or render-blocking scripts, and it can flag which one applies to your page.