Animated Progress Bar Web Component – progressbar.js
A really simple Custom Element that renders a basic, animated progress bar component on your web application.
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Youtube-like Customizable Top Loader In JavaScript – pageload
pageload is a small and dependency-free loading indicator library to create a Youtube-like loading bar on the top of the webpage.
Beautiful Loading Spinners & Progress Bars – Loading-Visualization
Loading-Visualization is a JavaScript/CSS library to visualizing loading status in animated, customizable loading spinners & progress bars.
Progressive Image Loading Inspired By Medium.com – Pure Media
Pure Media is a tiny JavaScript library that applies a Medium.com like progressive loading effect to images within the document.
Slim Progressbar Component With LitElement – monkey-bar
monkey-bar is an easy, slim progress bar web component built with LitElement.
Preload Specified Assets Using XHR2 – preload-it
The preload-it library preloads & prefetches assets (e.g. videos, audios, etc) using XMLHttpRequest to optimize the loading speed of your webpage.
16 Single Element Loading Spinners In Pure CSS – SpinBolt
SpinBolt is a collection of 16 minimal, clean, circular, animated loading spinners implemented in single element and CSS/CSS3.
Simulate Youtube Top Loading Indicator With TopLoader.js
TopLoader.js is a small JavaScript component that lets you create an animated top progress bar to simulate the Youtube-style loading indicator.
Fullscreen Loading Indicator – ui-preloader
A minimal clean loader UI component to create a customizable, fullscreen, CSS3 animated indicator for any loading process.
Display Loading Status As A Favicon
A script that makes use of JavaScript and Canvas to draw a square & circular loading spinner as a favicon displayed in the browser tab.