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LCP

LCP is Largest Contentful Paint, a Core Web Vital. Optimize image delivery and defer JavaScript to hit under 2.5 seconds and rank higher.

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Thibault Besson-Magdelain fondateur de Sorank

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Thibault Besson-Magdelain

Founder of Sorank, 5+ years of experience in SEO, GEO enthusiast.
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Summary: LCP (Largest Contentful Paint) measures when the main content on a page loads. It is a ranking signal and a user experience metric.

LCP is one of three Core Web Vitals Google uses to rank pages. It specifically measures when the largest visible element finishes rendering. The target is under 2.5 seconds. LCP often suffers because developers do not optimize the critical path. Google's critical rendering path documentation explains the order of events.

LCP is not just about images. A bloated JavaScript bundle, a slow server response, or a large text block with web fonts can all delay rendering. Optimizing LCP requires a holistic view of how content reaches the user.

Identify your LCP element

Open PageSpeed Insights and run an audit. PageSpeed tells you exactly which element is your LCP and its current load time. LCP is usually a hero image, large text block, or video. Measure across your top pages.

Optimize image delivery for LCP

If your LCP element is an image, compress it aggressively. Use WebP format. Preload the LCP image: <link rel="preload" as="image" href="hero.webp">. Use responsive image techniques with srcset.

Defer non-critical JavaScript

JavaScript can block image downloads if parsed during the critical rendering path. Use the defer attribute on script tags. Move tracking pixels, ads, and third-party scripts to load after the main content.

Reduce server response time (TTFB)

Improve TTFB by optimizing database queries, enabling caching, upgrading to better hosting, and using a CDN. A good TTFB target is under 200 ms.

Use a CDN and font optimization

A CDN cuts latency by 200 to 500 ms. If your LCP element is a text block with a web font, use font-display: swap or font-display: optional to unblock rendering while the font loads.

Conclusion

Optimizing LCP compounds across all your pages. Start with image optimization and server response time, test in PageSpeed Insights, and measure impact in Search Console over 4 weeks. Our GEO audit tool identifies your LCP element and recommends fixes in under 60 seconds per page.

Frequently questions asked

What counts as the Largest Contentful Paint?

Images, videos, text blocks, and other DOM elements. LCP tracks when the largest visible element on the page finishes loading. It is not always the hero image.

How do I know if my LCP is good?

Under 2.5 seconds is good. 2.5 to 4 seconds needs improvement. Over 4 seconds is poor. Check Google Search Console or PageSpeed Insights for your real user data.

Do I need to worry about LCP on every page?

Yes. LCP affects every page's ranking potential. Focus first on money pages and high-traffic pages, then move through the rest of your site systematically.

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