Technical Definition
Lazy loading defers loading of non-critical resources until needed. For images: load only when approaching viewport. Benefits: faster initial page load, reduced bandwidth, improved LCP for above-fold content. Implement via loading='lazy' attribute (native browser support) or JavaScript libraries. Caution: don't lazy load above-fold content or content needed for initial render.
Simple Explanation (ELI13)
Lazy loading means waiting to load images and other stuff until someone actually scrolls down to them. Why load images at the bottom of the page if someone might leave before scrolling that far? It makes the top of your page load faster. Just don't lazy load the main image people see first.
Related Terms
Page Speed, LCP, Image Optimization, Performance
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