⚡ JavaScript Libraries

JavaScript libraries are collections of prewritten JavaScript code with reusable functions and components that enable developers to simplify complex tasks, enhance website interactivity, and accelerate application development.

According to our statistics, JavaScript libraries are used on 71.3% of all websites.
22.6% of these sites use only one JavaScript library, 19.9% use two, and 57.5% use three or more of them.

⭐ Most Popular in 2026

The following chart shows the leading JavaScript libraries in 2026, based on market share.

The most popular is jQuery, which dominates the market with an overwhelming 87.5% share.
It is followed by Swiper with 19.8% and Facebook SDK with 14.4%.

jQuery 87.5%
Swiper 19.8%
Facebook SDK 14.4%
Polyfill 12.6%
ImagesLoaded 11.6%
Slick 9.8%
Owl Carousel 9.7%
Waypoints 8.4%
🍪 JS Cookie 8.3%
React 8.2%
Lottie 7.9%
Modernizr 7.8%
Fancyapps 6.7%
Magnific Popup 6.6%
MediaElement.js 6.6%

You can also drill down by country:

🚀 Country Highlights

Here is a list of libraries that are especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.

Facebook SDK is #2 in Poland ^(-1)
Polyfill is #2 in Russia ^(-2)
Slick is #2 in Japan ^(-4)
Owl Carousel is #2 in Bangladesh ^(-5)
ImagesLoaded is #3 in Germany ^(-2)
🍪 JS Cookie is #3 in Iran ^(-6)
React is #3 in Indonesia ^(-7)
Lottie is #3 in Israel ^(-8)
SystemJS is #3 in Kazakhstan ^(-20)
Wow.js is #3 in China ^(-22)

✨ Best JavaScript Libraries

Below is a more detailed list of the top 25 of the 303 JavaScript libraries we detect, ranked by their market share.

Rank	Name	Market share
1	jQuery San Francisco, California, United States A fast, small, feature-rich JavaScript library designed to simplify HTML DOM tree traversal and manipulation, event handling, CSS animations, and Ajax. FreeOpen source	87.5%
2	Swiper Weston, Florida, United States A modern touch slider library for building responsive sliders and carousels with hardware-accelerated transitions. FreeOpen source	19.8%
3	Facebook SDK Menlo Park, California, United States A library that provides client-side tools for Social Plugins, Facebook Login, and Graph API calls. Free	14.4%
4	Polyfill An open-source JavaScript library that provides modern web API features to older browsers that do not natively support them. FreeOpen source	12.6%
5	ImagesLoaded Alexandria, Virginia, United States A JavaScript library that detects when images have been loaded. FreeOpen source	11.6%
6	Slick An open source, fully responsive and accessible carousel library. FreeOpen source	9.8%
7	Owl Carousel Germany A touch enabled jQuery plugin that lets you create a beautiful, responsive carousel slider. FreeOpen source	9.7%
8	Waypoints West Linn, Oregon, United States A library that makes it easy to execute a function whenever you scroll to an element. FreeOpen source	8.4%
9	🍪 JS Cookie Germany A simple, lightweight JavaScript library for handling browser cookies. FreeOpen source	8.3%
10	React Menlo Park, California, United States A popular open-source JavaScript library for building dynamic user interfaces, created by Facebook. FreeOpen source	8.2%
11	Lottie San Francisco, California, United States An animation framework created by Airbnb that lets developers export Adobe After Effects animations as JSON and render them natively on mobile, desktop, and the web. FreeOpen source	7.9%
12	Modernizr A JavaScript library that detects the availability of HTML, CSS and JavaScript features in the user's browser. FreeOpen source	7.8%
13	Fancyapps A commercial library of JavaScript UI components that includes lightbox, carousel, and pan/zoom components. €29+	6.7%
14	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	6.6%
15	MediaElement.js Dallas, Texas, United States A free audio and video player with support for media files (MP4, WebM, MP3), streaming content (HLS, Dash), and embeddable players (YouTube, Facebook, Vimeo, Twitch, SoundCloud, etc). FreeOpen source	6.6%
16	jQuery BlockUI Allows you to block user interaction on the page or part of the page. FreeOpen source	6.1%
17	jQuery Easing Wilberfoss, North Yorkshire, United Kingdom A jQuery plugin that adds 10+ advanced easing animations. FreeOpen source	6.1%
18	Underscore.js Boston, Massachusetts, United States A utility library for JavaScript that provides support for functional programming helpers (each, map, reduce, filter) without extending any built-in JavaScript objects. FreeOpen source	6%
19	FlexSlider San Francisco, California, United States A responsive jQuery slider created by the WooCommerce team and included with WooCommerce. FreeOpen source	5.9%
20	Regenerator Menlo Park, California, United States A JavaScript library from Facebook that allows the use of ES6 generators in older browsers. FreeOpen source	5.7%
21	Lightbox San Francisco, California, United States The original lightbox library used to overlay images on top of the current page. FreeOpen source	5.4%
22	Isotope Alexandria, Virginia, United States A commercial JavaScript library for creating filterable and sortable grid layouts. FreeOpen source$25+	5.4%
23	SystemJS Vancouver, Canada A hookable, standards-based, dynamic ES module module loader. FreeOpen source	5.2%
24	SmartMenus A jQuery plugin for creating mobile-first, responsive, and accessible list-based website menus that work on all devices. FreeOpen source	4.8%
25	Wow.js A JavaScript library that reveals CSS animations when you scroll. FreeOpen source	4.4%

👉 See Also

✨ Related Technologies
- JavaScript
🔗 Links
- JavaScript library

Data is based on the analysis of 3,038,873 websites.
Statistics were last calculated on January 26, 2026.
For details, see our methodology and disclaimer.