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How can I optimize image loading to reduce LCP on mobile devices?
Asked on Jan 03, 2026
Answer
Optimizing image loading is crucial for reducing the Largest Contentful Paint (LCP) on mobile devices, as images often represent the largest visible element. Implementing responsive images and lazy loading can significantly enhance performance.
<!-- BEGIN COPY / PASTE -->
<img src="image.jpg"
srcset="image-320w.jpg 320w, image-480w.jpg 480w, image-800w.jpg 800w"
sizes="(max-width: 320px) 280px, (max-width: 480px) 440px, 800px"
loading="lazy"
alt="Description of image">
<!-- END COPY / PASTE -->Additional Comment:
- Use "srcset" and "sizes" attributes to serve appropriately sized images based on the device's screen width.
- Implement "loading='lazy'" to defer offscreen images until a user scrolls near them, reducing initial load time.
- Consider using modern image formats like WebP for better compression and faster loading times.
- Ensure images are optimized and compressed without losing quality to reduce file size.
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