LazyLoad is a lightweight, flexible script that speeds up your website by deferring the loading of your below-the-fold images, backgrounds, videos, iframes and scripts to when they will enter the viewport. Written in plain "vanilla" JavaScript, it leverages IntersectionObserver, supports responsive images and enables native lazy loading.

An upgradable boilerplate for Progressive web applications (PWA) with server side rendering, build with SEO in mind and achieving max page speed and optimized user experience.

Responsive images in the browser, simplified

Produce images at different sizes for responsive websites.

React component to display imgix images

🥇 A small JavaScript library to lazy-load almost anything. Defer.js is dependency-free, efficient, and optimized for Web Vitals.

React component for displaying well-optimized images from Sanity.io easily

A JavaScript client library for generating image URLs with imgix

A PHP client library for generating URLs with imgix

A gem for integrating imgix into Rails projects

A Ruby gem for generating image URLs with imgix

⚡️ Automatically make your site faster with optimized responsive images

Vue 2 image and video loader supporting lazy loading, background videos, fixed aspect ratios, low rez poster images, transitions, loaders, slotted content and more.

A Vue component that lets you quickly create responsive image tags with an optimal number of image sources for all devices.

Kirby plugin for better REST requests

A plugin for integrating imgix into Jekyll sites

Media-SrcSet implementiert SRCSET-Funktionalität.

Kirby 3 Plugin for creating lazyloading image srcset

React component to optimize your images based on srcset and add an automatic medium-like blur animation.

A Python client library for generating URLs with imgix

This TYPO3 extension provides ViewHelpers and configuration to render valid responsive images based on TYPO3's image cropping tool.

Generate srcset string from image

A Swift client library for generating URLs with imgix

A command line script that generates multiple responsive versions of an image at width breakpoints -- 320,480,640,768,960,1024,1280,1440 pixels wide -- that match common Mobile and widescreen desktop/laptop viewports using Imagemagick's convert utility and outputs the needed <img/> tag

WebSource Harvester is an educational web-source harvester that crawls a site (BFS, depth-controlled), downloads browser-visible assets (HTML, CSS, JS, images, fonts, PDFs), and rewrites paths so pages work offline, including nested routes. It enforces same-origin limits and is designed for learning, offline analysis, and safe portfolio demos.

A CLI to create sets of responsive images for the web

A Java client library for generating URLs with imgix

An add-on for integrating imgix into Statamic sites

🏙 Extra tiny `srcset` attribute parser ~150B

Advanced webpack2 image loader with support for image resizing, srcset and inlined placeholder. And it's blazing fast