Loading Images On The Page Asynchronously – lazyLoadImage
A tiny image lazy load JavaScript library that loads images within the document asynchronously to improve page speed.
JavaScript & CSS lazy load
Tiny Image Lazy Loader With Intersection Observer – Simply Lazy
A tiny lazy loader JavaScript library that uses Intersection Observer API to lazy load images.
Pure JavaScript Native Lazy Loading Polyfill
A small vanilla JavaScript polyfill for the loading=”lazy” attribute.
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.
Lazy Load Vimeo Video Player Until You Click The Thumbnail – Vimeo LazyLoad
Vimeo LazyLoad loads Vimeo video player on-demand when the user clicks on the play button & thumbnail image.
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.
Progressive Enhancement Resource Lazy Load Library – DemandJS
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.
Pure JavaScript Library For Lazy Loading Images & Videos – lazyload.js
lazyload.js is a stand-alone JavaScript library for lazy loading images and videos without any dependencies.
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.
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.