🥇 A small JavaScript library to lazy-load almost anything. Defer.js is dependency-free, efficient, and optimized for Web Vitals.
lazyload srcset lazysizes vanillajs intersection-observer microjs lazyloader scroll-reveal unveil vanilla-lazyload deferjs lazy-javascript lazy-js lazy-css lazy-image lazy-iframe lazy-video lazy-audio lazy-picture lazy-stylesheet
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Updated
Jul 14, 2025 - JavaScript