Lightweight Retina Ready JS Image Lazy Load Library – Layzr.js
Layzr.js is a lightweight yet robust JavaScript library that delay the loading of images until they’re scrolled into view.
JavaScript & CSS lazy load
Easy Lazy Loading Plugin For Images – lazyloading.js
A vanilla JavaScript library that enables lazy loading functionality on your site without having to add extra attributes to the original images.
Pure JavaScript Library For Lazy Loading Images & Videos – lazyload.js
A stand-alone JavaScript library for lazy loading images, videos, and iframes without any dependencies.
Pure JavaScript Native Lazy Loading Polyfill
A small vanilla JavaScript polyfill for the loading=”lazy” attribute.
Lazy Load Images/Backgrounds/Iframes With JavaScript – TinyLazyLoad
A really simple and lightweight JavaScript lazy load library that supports images, iframes, and background images.
Lazy Load Embed YouTube Player – youtube-iframe
A JavaScript library that easily adds Lazy Loading functionality to your Youtube videos embedded in your document.
Show Images Only If They Are In Viewport – ldlazy
A Vanilla JavaScript lazy loading library that shows images only if they are in the viewport.
Lazy Load iFrame Embedded Content With JavaScript – lazyframe.js
lazyframe.js is a native JavaScript library used to delay the loading of iframe content for Google Maps, Youtube/Vimeo/Vine videos and so on.
Dynamic Image Lazy Loading In Vanilla JavaScript – lazy.js
A smart lazyload JavaScript library that supports dynamic image loading, which means that newly added images will not be downloaded until they are visible on the screen.
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.