Easy Progress Bar Engine With Promise Support – Rsup Progress
A simple, fast, modern progress bar JavaScript library with promise support.
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Easy Lazy Loading Plugin For Images – lazyloading.js
A vanilla JavaScript library that enables lazy loading functionality on your site without having to add extra attributes to the original images.
CSS Only Image Loader With Fallback
A pure CSS loading indicator that displays when an image is loading on the page. It has the ability to display a fallback error image if the original image fails to load.
Pure JavaScript Library For Lazy Loading Images & Videos – lazyload.js
A stand-alone JavaScript library for lazy loading images, videos, and iframes without any dependencies.
Customizable Screen Skeleton Loader In CSS – css-skeletons.css
A CSS library to generate an animated, highly customizable skeleton preview of your web content using a single DIV.
Facebook Inspired Skeleton Loader In Pure CSS – Placeholder Loading
This is the pure CSS solution to create simple, animated, customizable skeleton loading effect as you’ve seen on Facebook.
Image Loading Blur Effect In JavaScript And CSS
A loading indicator that adds a beautiful image loading blur effect to your site. Kind of like Medium.com’s image lazy loading animation.
Lazy Load Images/Backgrounds/Iframes With JavaScript – TinyLazyLoad
A really simple and lightweight JavaScript lazy load library that supports images, iframes, and background images.
Animated Button Loader In CSS
An animated loading animation that displays an awesome stripe animation inside your button. Built with plain HTML and CSS.
Minimal Text-based Loading Indicator With JavaScript – lwder.js
A lightweight (1kb minified) plain JavaScript library for creating text-based (any characters even emojis) loading indicators with minimal effort.