Lazysizes
Web Performance OptimizationOpen Source Developer Tools

Lazysizes

High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration.

Open Source

About

lazysizes is a fast (jank-free), SEO-friendly and self-initializing lazyloader for images (including responsive images `picture/srcset`), iframes, scripts/widgets and much more. It also prioritizes resources by differentiating between crucial in view and near view elements to make perceived performance even faster.

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17,716
Forks
1,687
License
MIT
Last commit
3 years ago
JavaScript

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