16+ Pure HTML / CSS Loading Spinners – Spinners.css
This is another collection of 16+ single- or multi-element loading spinners built with pure HTML/CSS and animated by CSS3.
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Pure CSS Single Element Loading Indicator Collection – text-spinners
text-spinners is a collection of 29+ CSS/CSS3 powered single element loading indicator for ajax requests and/or asynchronous operations.
Simple Cross-Browser Pure CSS Loading Animations – whirl.css
whirl.css is a lightweight CSS library helps you create a variety of loading animations (loading spinners) using pure CSS/CSS3.
Progressive Image Loading Effect In Pure CSS
A pure CSS image loader to simulate the progressive image loading with a blur effect as you seen on Instagram and Medium.com.
Minimal Fullscreen Content Loader – H5Loading.js
H5Loading.js is a dead simple JavaScript library used to create a CSS based fullscreen loading indicator for ajax/asynchronous requests.
Tiny Reading Progress Indicator With Pure JavaScript – rpbar.js
rpbar.js is a JavaScript library used to display a top progress bar indicating the reading progress about your web content within a specific container.
Material Design Inspired Progress Bar with CSS3 and Pure JS – Mprogress.js
Mprogress.js is a JavaScript library to created linear progress indicator that fills from 0% to 100% using CSS3 powered animations.
Radial Progress Bar With JavaScript And HTML5 Canvas
A JavaScript library used for rendering a radial & circular progress bar on an HTML5 canvas element to present the percentage value you specify.
Minimal Busy Indicator With JavaScript And CSS3
A vanilla JavaScript library that uses CSS3 to create an animated loading spinner / busy indicator while loading something into your webpage.
Vanilla JavaScript Library For Image Preloading – Vanilla Preloader
A simple vanilla JavaScript library used to preload an array of images which are needed later.