⚡ JavaScript Libraries in Spain

JavaScript libraries are collections of prewritten code that provide reusable functions and components for building interactive features and handling common client-side tasks in web applications.

Spain is a Southern European country with a population of around 48 million people.

According to our statistics, JavaScript libraries are used on 80.7% of websites from Spain.

Statistics based on 86K+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is jQuery, which dominates the market with an overwhelming 92.1% share.
It is followed by Swiper with 24.4% and Polyfill with 18.4%.

jQuery 92.1%
Swiper 24.4%
Polyfill 18.4%
ImagesLoaded 18.1%
Facebook SDK 13.6%
Lottie 13.3%
🍪 JS Cookie 12.7%
Waypoints 12.5%
Owl Carousel 11.8%
MediaElement.js 10.7%
jQuery BlockUI 10%
Modernizr 9.8%
Isotope 9.2%
Slick 8.7%
Underscore.js 8.7%

🚀 Highlights

Here is a list of the top libraries that are more popular in Spain than worldwide.
Differences between global and country rankings are shown in parentheses.

3. Polyfill ^(-1)
4. ImagesLoaded ^(-1)
6. Lottie ^(-4)
7. 🍪 JS Cookie ^(-1)
8. Waypoints ^(-3)
10. MediaElement.js ^(-5)
11. jQuery BlockUI ^(-5)
13. Isotope ^(-8)
15. Underscore.js ^(-2)
16. jQuery Easing ^(-2)

✨ Best JavaScript Libraries

Below is a more detailed list of the top 25 of the 286 JavaScript libraries used on sites from Spain, 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	92.1%
2	Swiper Weston, Florida, United States A modern touch slider library for building responsive sliders and carousels with hardware-accelerated transitions. FreeOpen source	24.4%
3	Polyfill An open-source JavaScript library that provides modern web API features to older browsers that do not natively support them. FreeOpen source	18.4%
4	ImagesLoaded Alexandria, Virginia, United States A JavaScript library that detects when images have been loaded. FreeOpen source	18.1%
5	Facebook SDK Menlo Park, California, United States A library that provides client-side tools for Social Plugins, Login, and Graph API calls. Free	13.6%
6	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	13.3%
7	🍪 JS Cookie Germany A simple, lightweight JavaScript library for handling browser cookies. FreeOpen source	12.7%
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	12.5%
9	Owl Carousel Germany A touch enabled jQuery plugin that lets you create a beautiful, responsive carousel slider. FreeOpen source	11.8%
10	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	10.7%
11	jQuery BlockUI Allows you to block user interaction on the page or part of the page. FreeOpen source	10%
12	Modernizr A JavaScript library that detects the availability of HTML, CSS and JavaScript features in the user's browser. FreeOpen source	9.8%
13	Isotope Alexandria, Virginia, United States A commercial JavaScript library for creating filterable and sortable grid layouts. FreeOpen source$25+	9.2%
14	Slick An open-source, fully responsive and accessible carousel library. FreeOpen source	8.7%
15	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	8.7%
16	jQuery Easing Wilberfoss, North Yorkshire, United Kingdom A jQuery plugin that adds 10+ advanced easing animations. FreeOpen source	8.6%
17	FlexSlider San Francisco, California, United States A responsive jQuery slider created by the WooCommerce team and included with WooCommerce. FreeOpen source	8.6%
18	Regenerator Menlo Park, California, United States A JavaScript library from Facebook that allows the use of ES6 generators in older browsers. FreeOpen source	8.6%
19	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto. FreeOpen sourceLegacy	8.5%
20	SmartMenus A jQuery plugin for creating mobile-first, responsive, and accessible list-based website menus that work on all devices. FreeOpen source	8.1%
21	Fancyapps A commercial library of JavaScript UI components that includes lightbox, carousel, and pan/zoom components. €29+	7.4%
22	jQuery Mousewheel A jQuery plugin that adds cross-browser mouse wheel support. FreeOpen sourceLegacy	6.2%
23	Masonry Alexandria, Virginia, United States A cascading grid layout library that places elements in optimal positions based on available vertical space. FreeOpen source	6.1%
24	Lightbox San Francisco, California, United States The original lightbox library used to overlay images on top of the current page. FreeOpen source	5.9%
25	React Menlo Park, California, United States A popular open-source JavaScript library for building dynamic user interfaces, created by Facebook. FreeOpen source	5.7%

👉 See Also

🌎 JavaScript Libraries in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 86,449 websites from Spain.
We currently track the presence of 310 JavaScript libraries across the web.
Of these, 286 were detected on websites from Spain.
Statistics were last calculated on April 17, 2026.
For more details, see our methodology and disclaimer.