DemandJS is a modern, high-performance and progressive enhancement JavaScript lazy load library that delays the loading of web resources (e.g. images, videos, iframes) until they come into view.
lazyload.js is a stand-alone JavaScript library for lazy loading images and videos without any dependencies.
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.
Yet another Youtube lazy loader that delays the loading of Youtube video player to improve the performance of your web page.
A lightweight, high-performance image lazy loading library that uses Intersection Observer API to detect whether your images are visible in the viewport.
imagebuddy is a pure JavaScript plugin for lazy loading images with support for custom placeholder and fallback.
Vimeo LazyLoad loads Vimeo video player on-demand when the user clicks on the play button & thumbnail image.
io-lazyload is an extremely fast JavaScript library for lazy loading images/ifames/backgrounds that uses IntersectionObserver API to handle position detection.
with-preview is a JavaScript for modern image lazy loading effect that progressively blurs and fades in images when they’re scrolled into view.
yall.js is a really small JavaScript library to lazy load images, videos, iframe contents and background images as the users scroll through your content-heavy webpage.