Images on your page are not responsive, meaning mobile users may be downloading unnecessarily large images. This wastes bandwidth and slows down page loading, particularly impacting mobile Core Web Vitals scores.
<img src="large-image.jpg" alt="...">Provide multiple image sizes using the `srcset` attribute.
<img src="large-image.jpg" srcset="small-480w.jpg 480w, medium-800w.jpg 800w, large-image.jpg 1200w" sizes="(max-width: 600px) 480px, (max-width: 1000px) 800px, 1200px" alt="...">Responsive images ensure users download appropriately sized images for their device, improving LCP and overall performance.
This issue can affect your site's search engine rankings and user experience. Addressing it promptly helps ensure optimal performance and visibility in search results.
Black SEO Analyzer automatically checks for this warning during site analysis, along with hundreds of other technical SEO issues.
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