⚡ JavaScript Libraries in Portugal

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.

Portugal is a Southern European country with a population of around 10.3 million people.

According to our statistics, JavaScript libraries are used on 78.8% of websites from Portugal.

⭐ Most Popular in 2026

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

The most popular is jQuery, which dominates the market with an overwhelming 88.8% share.
It is followed by Swiper with 21.6% and Facebook SDK with 16.6%.

jQuery 88.8%
Swiper 21.6%
Facebook SDK 16.6%
ImagesLoaded 13.5%
Polyfill 13.3%
Owl Carousel 12.8%
Waypoints 11.6%
Modernizr 11.3%
Slick 10.1%
Magnific Popup 9.3%
🍪 JS Cookie 9.2%
Lottie 9.1%
Isotope 8.5%
jQuery Easing 8.5%
React 8.3%

🚀 Highlights

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

4. ImagesLoaded ^(-1)
6. Owl Carousel ^(-1)
7. Waypoints ^(-4)
8. Modernizr ^(-4)
10. Magnific Popup ^(-4)
13. Isotope ^(-8)
14. jQuery Easing ^(-4)
16. FlexSlider ^(-3)
18. SystemJS ^(-5)
24. Web Font Loader ^(-3)

✨ Best JavaScript Libraries

Below is a more detailed list of the top 25 of the 255 JavaScript libraries used on sites from Portugal, 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	88.8%
2	Swiper Weston, Florida, United States A modern touch slider library for building responsive sliders and carousels with hardware-accelerated transitions. FreeOpen source	21.6%
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	16.6%
4	ImagesLoaded Alexandria, Virginia, United States A JavaScript library that detects when images have been loaded. FreeOpen source	13.5%
5	Polyfill An open-source JavaScript library that provides modern web API features to older browsers that do not natively support them. FreeOpen source	13.3%
6	Owl Carousel Germany A touch enabled jQuery plugin that lets you create a beautiful, responsive carousel slider. FreeOpen source	12.8%
7	Waypoints West Linn, Oregon, United States A library that makes it easy to execute a function whenever you scroll to an element. FreeOpen source	11.6%
8	Modernizr A JavaScript library that detects the availability of HTML, CSS and JavaScript features in the user's browser. FreeOpen source	11.3%
9	Slick An open-source, fully responsive and accessible carousel library. FreeOpen source	10.1%
10	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto.js. FreeOpen sourceLegacy	9.3%
11	🍪 JS Cookie Germany A simple, lightweight JavaScript library for handling browser cookies. FreeOpen source	9.2%
12	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	9.1%
13	Isotope Alexandria, Virginia, United States A commercial JavaScript library for creating filterable and sortable grid layouts. FreeOpen source$25+	8.5%
14	jQuery Easing Wilberfoss, North Yorkshire, United Kingdom A jQuery plugin that adds 10+ advanced easing animations. FreeOpen source	8.5%
15	React Menlo Park, California, United States A popular open-source JavaScript library for building dynamic user interfaces, created by Facebook. FreeOpen source	8.3%
16	FlexSlider San Francisco, California, United States A responsive jQuery slider created by the WooCommerce team and included with WooCommerce. FreeOpen source	7.6%
17	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	7.3%
18	SystemJS Vancouver, Canada A hookable, standards-based, dynamic ES module module loader. FreeOpen source	7.1%
19	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	7%
20	jQuery BlockUI Allows you to block user interaction on the page or part of the page. FreeOpen source	6.8%
21	Fancyapps A commercial library of JavaScript UI components that includes lightbox, carousel, and pan/zoom components. €29+	6.8%
22	Regenerator Menlo Park, California, United States A JavaScript library from Facebook that allows the use of ES6 generators in older browsers. FreeOpen source	5.8%
23	Lightbox San Francisco, California, United States The original lightbox library used to overlay images on top of the current page. FreeOpen source	5.4%
24	Web Font Loader San Jose, California, United States A JavaScript library that gives you added control when using linked fonts via @font-face. FreeOpen source	5.1%
25	SmartMenus A jQuery plugin for creating mobile-first, responsive, and accessible list-based website menus that work on all devices. FreeOpen source	5.1%

👉 See Also

✨ Related Technologies
- JavaScript
🌎 JavaScript Libraries in other countries

Data is based on the analysis of 14,630 websites from Portugal.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.