Lozad.js
🔥 Highly performant, light ~0.9kb and configurable lazy loader in pure JS with no dependencies for responsive images, iframes and more
Aload
Loads images, scripts, styles, iframes, videos and audio asynchronously.
Lazyload
Tiny, dependency-free async JavaScript and CSS loader.
Px Loader
PxLoader is a simple JavasScript library for creating preloaders and resource downloaders for HTML5 apps.
RequireJS
A file and module loader for JavaScript
Oc Lazy Load
Load modules on demand (lazy load) in AngularJS
Pilpil
Pilpil - Progressive Image Loading
Sea.js
A Module Loader for the Web
Nanobar
Very lightweight progress bars. No jQuery
Blazy
bLazy is a lightweight lazy loading and multi-serving image script. It's written in JavaScript why it doesn't have any dependencies for 3rd party libraries like jQuery. bLazy is working in all modern browser including IE7+.
Script.js
Asyncronous JavaScript loader and dependency manager
Layzr.js
A small, fast, modern, and dependency-free library for lazy loading.
Queue
Yet another asynchronous helper library for JavaScript. 387 bytes minified and gzipped!
Query Loader2
Version of the QueryLoader by Gaya Design. Preload images with ease.
Head js
The only script in your HEAD. Head JS loads JavaScript files in parallel like images without blocking the page. Your page will be faster. Even with a single combined file.
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.
Webpack
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.