---
title: "Improve LCP to under 2.5 seconds"
description: "Largest Contentful Paint is the time until the biggest visible element renders. Google's good threshold is 2.5 seconds at the 75th percentile of field data. Measure with CrUX or PageSpeed Insights, identify the element, then fix server response, resource load delay, load duration and render delay."
url: "https://seo-mcp.io/t/improve-lcp-to-under-2-5-seconds"
---

# Improve LCP to under 2.5 seconds

Largest Contentful Paint is the time until the biggest visible element renders. Google's good threshold is 2.5 seconds at the 75th percentile of field data. Measure with CrUX or PageSpeed Insights, identify the element, then fix server response, resource load delay, load duration and render delay.

## Prerequisites

- Access to field data (CrUX or Search Console)
- Ability to change markup and asset delivery

## Steps

1. **Identify the LCP element and its timing** — Open the Performance panel, load the page on a throttled mobile profile and read the LCP marker. Record time to first byte, resource load delay and render delay separately.
   Check: The LCP element is named in the trace and its four phase durations are recorded.
2. **Remove the dominant delay** — Preload hero images with fetchpriority=high, remove loading=lazy from above-the-fold media, and serve the HTML from an edge cache. Avoid client-only rendering for the hero.
   Check: The LCP image request starts before the first render-blocking resource finishes loading.
3. **Confirm with field data** — After deploying, check the Core Web Vitals report or CrUX for the template. Field data lags, so compare four-week windows.
   Check: Field p75 LCP for the URL group is 2.5 seconds or less.

## Source

@seo-mcp on 2026-10-19: https://web.dev/articles/lcp

Canonical: https://seo-mcp.io/t/improve-lcp-to-under-2-5-seconds