Pure JavaScript Library For Lazy Loading Images – lazyload.js
lazyload.js is a stand-alone JavaScript library for lazy loading images without any dependencies.
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Minimal SVG Loading Spinner In Pure JS – LoadingSpinner.js
A vanilla JavaScript plugin to show a basic, animated, SVG-based loading spinner on the screen when needed.
Delay The Loading Of Anything With Defer.js
Defer.js is a small and lightweight JavaScript library that delays the loading of web resources to improve page speed.
Pull To Refresh Library With Pure JavaScript – Pull.js
Pull.js is a tiny and zero-dependency JavaScript library that provides pull to refresh & pull to load functionality for your mobile webpages.
Progressively Load Images & Iframes Using Plain JavaScript – ProgressiveMedia
The ProgressiveMedia is a vanilla JavaScript plugin used to loads images and iframes progressively as they’re scrolled into view.
9 Minimal CSS Loading Spinners
Yet another collection of 9 minimal loading spinners created using pure CSS/CSS3.
Preload Pages Based On User’s Intention – instant.page
instant.page is a small JavaScript library used to boost the page loading speed by preloading target pages when a user intends to click on the link (mouse hover).
Performant Element lazy Load Library – Lozad
Lozad is a small, highly performant JavaScript library used to lazy load any html elements (e.g. images, videos, etc.) using Intersection Observer Web API.
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.
iOS Style Loading Spinner with Pure CSS – ispinner
Display an iOS-style loading indicator while data in a specific area is loading. Built with pure CSS and CSS3.