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What causes a high LCP time and how can I fix it efficiently?

Asked on Sep 10, 2025

Answer

A high Largest Contentful Paint (LCP) time is often caused by slow server response times, render-blocking resources, and large image sizes. To efficiently fix this, you can optimize server performance, defer non-critical JavaScript, and ensure images are properly compressed and sized.

Example Concept: LCP measures how quickly the largest visible element (e.g., image, video, or block-level text) is rendered on the screen. Improving LCP involves optimizing server response times, minimizing render-blocking CSS and JavaScript, and ensuring images are properly compressed and delivered in next-gen formats like WebP.

Additional Comment:

Optimize server response times by using a Content Delivery Network (CDN) and enabling server-side caching.
Defer non-critical JavaScript and use async or defer attributes to prevent render-blocking.
Compress and resize images, and consider using responsive images with the "srcset" attribute.
Preload key resources such as fonts and critical CSS to speed up rendering.

✅ Answered with Core Web Vitals best practices.

Ask any question about Performance here... and get an instant response.

What causes a high LCP time and how can I fix it efficiently?

Asked on Sep 10, 2025

Answer

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