Performance Audit Of Web Applications By Professionals

Lazy loading of Images | Image Optimization | Networking Performance

Load either a loading image or a low resolution image first and then replace it with a high resolution image after a webpage’s completely loaded.

A google search for ‘lazy loading js library’ will return links to several libraries, though we have shortlisted the most popular libraries:

  • Echo.js, Echo is a standalone JavaScript lazy-loading image micro-library. Echo is fast, 2KB, and uses HTML5 data-* attributes for simple. Echo works in IE8+.

  • Unveil.js, a very lightweight plugin to lazy load images for jQuery or Zepto.js Lightweight version of Lazy Load with support for serving high-resolution images to devices with retina displays - less than 1k.


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