A lightweight and flexible script that speeds up your web application by delaying the loading of your below-the-fold images, videos and iframes until they enter the viewport.

Turbolinks

A JavaScript library that allows web apps to behave like a single page application.

Turbo

A lightweight JavaScript library that provides the speed and feel of a single-page application without requiring developers to write any JavaScript.

BaguetteBox.js

Simple and easy to use lightbox script written in pure JavaScript.

OpenLayers

An open-source, feature-packed library for creating interactive maps on the web.

fullPage.js

A library that creates fullscreen scrolling websites with landscape sliders inside the sections of the page.

Lite YouTube

A lightweight YouTube embed designed to improve page loading performance.

Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers.

Choices.js

A vanilla, lightweight, configurable select box/text input JavaScript library.

Critters

A deprecated Webpack plugin that inlines your app's critical CSS and lazily loads the rest.

Scriptaculous

An open-source JavaScript library built on the Prototype framework that provides visual effects, user interface controls, and AJAX utilities for web applications.

Highlight.js

An open-source JavaScript syntax highlighter with automatic language detection and zero dependencies for browser and server-side environments.

html2canvas

A script that takes "screenshots" of web pages or parts of them, directly on the user's browser.

An open-source library for publishers to quickly implement header bidding advertising.

Paper.js

An open-source vector graphics scripting framework that runs on top of the HTML5 Canvas.

Fastly Polyfill

A service that reads the User-Agent header of each request and returns polyfills appropriate for the requesting browser.

Babel

A JavaScript compiler mainly used to convert ECMAScript 2015+ (ES6) code into an older JavaScript (ES5) version to maximize browser compatibility.

Pts

A lightweight and modular typescript library that comes with many useful algorithms for visualization and creative coding.

Locomotive Scroll

A simple scroll library with smooth scrolling, parallax effects, toggling classes, and triggering event listeners when elements are in the viewport.

Cufon

A discontinued JavaScript library that performs text replacement on web pages, using the canvas element and VML to render fancy fonts.

Day.js

Fast 2kB alternative to Moment.js with the same modern API.

Quicklink

An open-source JavaScript library from the Google Chrome team that speeds up subsequent page loads by prefetching links likely to be visited next.

StyleX

An open-source styling system and CSS-in-JS library developed by Meta for building and maintaining large-scale web applications.

iScroll

A high-performance JavaScript library for smooth scrolling.

GeoJS

A REST-based IP geolocation service that provides APIs without authentication or rate limits.