Performance Check n°79 / 120

Image lazy loading

Lazy loading means images only download when the visitor is about to see them while scrolling. Images far down the page aren't unnecessarily…

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How TheSiteFuse checks "Image lazy loading"

Lazy loading means images only download when the visitor is about to see them while scrolling. Images far down the page aren't unnecessarily loaded at the start.

Real-world impact of "Image lazy loading"

On a page with many images, lazy loading can reduce initial load time by 50% or more. Google considers it in Core Web Vitals. It's a single line of code per image.

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