Smooth play fill loader with HTML, CSS and JavaScript.

One div for a spinning loader w/no JavaScript. Mimics the look of Chrome's browser tab loader. Keyframes and pseudos help to bring this animation to life along with using other techniques like creating half a circle to make the loader fill.

psst.js is a pure JavaScript library that helps you handle file paste and drop’n’drop events on your webpage. Ideal for drag’n’drop image uploader.

ZlataLoader.js is a minimal JavaScript library to create animated loaders that rotate a loading spinner of your choice along a circle.

Context loader like Facebook with pure javascript

Progressive-images for Vanilla JavaScript

Vanilla javascript progress bar for browser, no css file, no dependency.

A modern, vanilla JavaScript gif previewer and loader.

A css3-based Loading, pure js, does not depend on Jquery, is compatible with all browsers that support H5, css and js files are only 5.7KB in total size, support for custom loading colors, mask colors, loading fade and animation times and loading The Applicability is strong, easy to use.(Yi Ge Ji Yu css3De Jia Zai Loading,Yong Yu ajaxDeng Hao Shi Cao Zuo De Zu Sai . Chun jsBian Xie ,Bu Yi Lai Jquery,Jian Rong Suo You Zhi Chi H5...

A JavaScript library to preload images.

A image preloaded plugin and can display the loaded image progress bar

The tiniest lazy loader for images - written in vanilla JS with no dependencies

Lightweight Javascript Resource Pre-Loading library.

A library that takes an image URL, preloads it and triggers a supplied callback.

Vanilla JS img lazy loading with broken img style implementation. {Experiment}

Lazy Load Image functionality built with Vanilla JS

Tweets-loader.js is a JavaScript library that loads tweets of Twitter Publish

kit.lazy is a small, simple image lazy loading library that supports image tag, background image, and asynchronous images loading.

load images only when they are in (and remain in) the viewport

Btn-loader is a tiny, dependency-free JavaScript library that replaces the regular button with a customizable loading indicator when clicked.

Prelodr is a native JavaScript library (also can be used as a jQuery plugin) that helps create a Google Inbox style content preloader with async and chaining support.

Complex Loader and Progress Management for Vanilla JS

A tiny script to simulate a loading screen that blurs the background until the loading countdown is finished.

Finally, a simple, lightweight (0.6kb), pure JavaScript image lazy loader that even works in IE* using the IntersectionObserver API

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.

A tiny vanilla javascript library to create drop zone for input file element.

Load content from an url in an element (without jQuery)

Flexible, light weighted and super fast Progress Bar Library