Modern SEO-friendly Image Lazy Load Library – leniwiec.js
leniwiec.js is a tiny JavaScript lazy load library that supports img/picture tags and background images. Powered by the Intersection Observer API.
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Lazy Loading Of Images And Iframes Using IntersectionObserver – AyLazyLoader
AyLazyLoader is a native JavaScript lazy loader for lazy loading images, iframes and AJAX content based on Intersection Observer API.
Single Div CSS Loading Spinners – css-loader
css-loader is a set of loading indicators / spinners built using single DIV element and pure CSS/CSS3.
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.
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.
Minimalist Image Lazy Loader Based On Intersection Observer – lzy.js
lzy.js is a small performant image & background image lazy loader built with vanilla JavaScript and the Intersection Observer API.
Pure JavaScript Library For Lazy Loading Images – lazyload.js
lazyload.js is a stand-alone JavaScript library for lazy loading images without any dependencies.
Embeds HTML Into A Document Using Fetch API – html-include
html-include is a web component that enables developers to embed external HTML content into a document using the Fetch API.
Small Top Progress Bar Component In Pure JS – bar-of-progress
bar-of-progress is a pure JavaScript component that displays a progress bar/loading indicator on the top of the page just like Youtube.
Lazy Load Image With Placeholder And Fallback – imagebuddy
imagebuddy is a pure JavaScript plugin for lazy loading images with support for custom placeholder and fallback.