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.
JavaScript & CSS loading indicator
Text Loading Effect By Animating Characters – letterloading.js
A vanilla JavaScript library to simulate a text loading effect by animating an array of text strings.
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.
Animated Skeleton Loader In Pure JavaScript
A JavaScript library that helps you create an animated, customizable skeleton loader for any content that is loading.
Slick Content Loader With Vanilla JavaScript – slick-loader
A small and developer-friendly content loader JavaScript library for the web.
Replace Favicon With A Loading Indicator In The Browser Tab – favloader
favloader is a vanilla JavaScript plugin that replaces the favicon with a customizable loading spinner when needed.
Simulate A Page Loader With A Blur Effect – Blury-Loading
A tiny script to simulate a loading screen that blurs the background until the loading countdown is finished.
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.
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.