Notification/Dialog/Loading Indicator JavaScript Library – Fnon
A multifunctional popup box library for creating toast notifications, alert/confirm dialog boxes, and various types of loading indicators on the web app.
JavaScript & CSS loading indicator
Detect and Display Website Loading Progress – Siteloader
An easy-to-use JavaScript library designed to provide real-time, precise loading progress detection for web pages.
Simple Toast Notification & Loading Indicator JavaScript Library – popular-message.js
A JavaScript library that helps create toast-like info/success/warning/error notifications and loading indicators on your modern web apps.
Elegant Notification Popup JavaScript Library – Notiflix
Notiflix is a flexible, powerful and customizable notification popup library which sends different types of notification messages to the user.
Animated Skeleton Loading Screens In Pure CSS
A CSS skeleton loader library that creates an animated skeleton preview of your block content (e.g. text, cards, images) when the data is loading.
Pages Transition Loader In Vanilla JavaScript
A Vanilla JavaScript library that displays a customizable loading indicator while loading assets on your web pages.
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.
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.