Vanilla JavaScript Plugin

JSLazyLoading  

A lightweight performance-oriented plugin for lazy loading and multi-serving of images.

Plugin Website  Demo

Related plugins

lazySizes  

lazySizes is a fast and SEO-friendly lazy-loader for images, iframes, scripts and much more.

LazyLoad  

Load images only when they're about to enter the viewport.

justlazy.js  

A tiny JavaScript library for lazy loading of responsive images.