vanilla-lazyload

LazyLoad is a fast, lightweight and flexible script that speeds up your web application by loading images only as they enter the viewport. LazyLoad supports responsive images.

图片懒加载,支持图片、背景图、视频、网页

lazysizes

用于图像(响应式和正常)、iframe 等的高性能和 SEO 友好的惰性加载程序,可检测通过用户交互、CSS 或 JavaScript 触发的任何可见性更改,无需配置。

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