responsive-images

Optimize images to prevent layout shift by reserving space using width and height attributes or aspect-ratio CSS, implementing responsive sizing with srcset, and applying lazy loading to improve Core Web Vitals.

Implement responsive images with AVIF and WebP by using the picture element to serve modern formats, providing fallbacks, and utilizing srcset and sizes attributes for optimal image selection across viewports.

Use srcset and sizes for art direction by providing different image crops for various viewports, allowing the browser to select the optimal image source based on screen dimensions and network conditions.

You need fetchpriority set to high and lazy loading configured properly for hero images to optimize Largest Contentful Paint, ensuring above-the-fold visuals load immediately while deferring offscreen images.

Implementing WebP and AVIF formats reduces bandwidth for responsive images by utilizing modern compression within the picture element, serving smaller file sizes compared to JPEG without sacrificing quality.

Your responsive image strategy causes Cumulative Layout Shift if you omit explicit width and height attributes or fail to define an aspect-ratio, preventing the browser from reserving adequate space during rendering.