Image Preloader With Loaded Callback – ImagePreloader
A lightweight image preloader written in pure JS that will trigger a callback function when all the provided images are completely loaded.
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Fancy Three-dots Loading Spinners With Pure CSS – Three Dots
Three Dots is a small CSS/CSS3 library that provides a set of 19 fancy animated loading spinners created with three dots.
Any Resources Preloader JavaScript Library – Loader.js
Loader.js is a pure JavaScript preloader that preloads web resources (text, JSON, images, audios, videos, etc) and triggers certain events while loading and after loaded.
Responsive Image Lazy Load JS Library – lazysizes
lazysizes is an easy yet robust JS library used to delay the loading of images (iframes, scripts, etc) until they come into view.
Easy Pull To Refresh Library With Pure JavaScript – pulltorefresh.js
pulltorefresh.js is a lightweight, customizable JavaScript library that adds the pull to refresh functionality to your webpages using pure JavaScript.
Small Image Lazy Loader – yall.js
yall.js is a really small JavaScript library to lazy load images as the users scroll through your content heavy webpage. Supports srcset attribute and picture element.
Web Preloader & Lazy Loader Library – Loader
Loader is a powerful JavaScript library used to preload or lazy load ‘Heavy’ HTML elements on the webpage, such as images, audios, videos, iframes, and etc.
Load Youtube Video Only When Needed – Youtube LazyLoad
Yet another Youtube lazy loader that delays the loading of Youtube video player to improve the performance of your web page.
Animated Image Lazy Loader With Broken Image Fallback – rogano-lazy
rogano-lazy is a modern image lazy loader written in pure JavaScript without any 3rd dependencies.
Defer Loading Of Images And CSS Classes & Styles Using JavaScript – safe-defer.js
safe-defer.js is an SEO-friendly JavaScript lazy load library that has the ability to defer the loading of images, CSS classes, and inline CSS styles to improve your page load time.