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.
jQuery Pjax
pushState + ajax = pjax
Java Script Load Image
JavaScript Load Image is a library to load images provided as File or Blob objects or via URL. It returns an optionally scaled and/or cropped HTML img or canvas element. It also provides a method to parse image meta data to extract Exif tags and thumbnails and to restore the complete image header after resizing.
Script.js
Asyncronous JavaScript loader and dependency manager
Layzr.js
A small, fast, modern, and dependency-free library for lazy loading.
LABjs
Loading And Blocking JavaScript: On-demand parallel loader for JavaScript with execution order dependencies