How to Fix Slow Largest Contentful Paint (LCP)

Your main content takes too long to render, hurting rankings and UX.

Symptoms you'll see

LCP measures how long the largest visible element (usually a hero image or heading) takes to render. Above 2.5s is poor; above 4s is failing.

Why it happens

LCP is a Core Web Vital and confirmed ranking factor. Slow LCP correlates with higher bounce, lower conversions, and weaker mobile rankings.

Try it yourself

This article is interactive — model the fix on your own numbers right here.

Open the Core Web Vitals Checker

Step-by-step fix

Serve images in WebP/AVIF with width/height, preload the hero, eliminate render-blocking CSS/JS, use a CDN, and defer non-critical scripts. Measure with field data, not just lab tools.

How SEO Surgeon catches it

Our engine notes pages with poor engagement likely tied to load speed and prioritises performance fixes in your developer task list.

Fix this across your whole site

Don't hunt manually. Upload your Google Search Console export and our AI finds every affected page and writes the fixes.

SEO Surgeon

Find your biggest SEO opportunities in minutes

Upload your Google Search Console export and AI hands you a prioritised roadmap — lost clicks, CTR gaps, revenue leakage, and exactly what to fix first. Your first analysis is free.