⚡ JavaScript Libraries in Bulgaria

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.

Bulgaria is a Southeastern European country with a population of around 6.5 million people.

According to our statistics, JavaScript libraries are used on 68.8% of websites from Bulgaria.

Statistics based on 13K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top JavaScript libraries in Bulgaria 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 Facebook SDK with 28.7% and Swiper with 17.9%.

jQuery 88.8%
Facebook SDK 28.7%
Swiper 17.9%
Owl Carousel 13.1%
ImagesLoaded 10.7%
Polyfill 9.7%
Modernizr 9.4%
🍪 JS Cookie 9.4%
Magnific Popup 8.9%
Slick 8.7%
Fancyapps 8.4%
Waypoints 8.2%
jQuery BlockUI 7.7%
jQuery Easing 6.8%
Underscore.js 6.8%

🚀 Highlights

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

2. Facebook SDK ^(-1)
4. Owl Carousel ^(-3)
7. Modernizr ^(-5)
9. Magnific Popup ^(-5)
11. Fancyapps ^(-2)
13. jQuery BlockUI ^(-3)
14. jQuery Easing ^(-4)
15. Underscore.js ^(-2)
16. Lightbox ^(-4)
17. FlexSlider ^(-2)

✨ Best JavaScript Libraries

Below is a more detailed list of the top 25 of the 254 JavaScript libraries used on sites from Bulgaria, 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	Facebook SDK Menlo Park, California, United States A library that provides client-side tools for Social Plugins, Login, and Graph API calls. Free	28.7%
3	Swiper Weston, Florida, United States A modern touch slider library for building responsive sliders and carousels with hardware-accelerated transitions. FreeOpen source	17.9%
4	Owl Carousel Germany A touch enabled jQuery plugin that lets you create a beautiful, responsive carousel slider. FreeOpen source	13.1%
5	ImagesLoaded Alexandria, Virginia, United States A JavaScript library that detects when images have been loaded. FreeOpen source	10.7%
6	Polyfill An open-source JavaScript library that provides modern web API features to older browsers that do not natively support them. FreeOpen source	9.7%
7	Modernizr A JavaScript library that detects the availability of HTML, CSS and JavaScript features in the user's browser. FreeOpen source	9.4%
8	🍪 JS Cookie Germany A simple, lightweight JavaScript library for handling browser cookies. FreeOpen source	9.4%
9	Magnific Popup A responsive lightbox and dialog plugin for jQuery and Zepto. FreeOpen sourceLegacy	8.9%
10	Slick An open-source, fully responsive and accessible carousel library. FreeOpen source	8.7%
11	Fancyapps Ogre, Latvia A commercial library of JavaScript UI components that includes lightbox, carousel, and pan/zoom components. €29+	8.4%
12	Waypoints West Linn, Oregon, United States A library that makes it easy to execute a function whenever you scroll to an element. FreeOpen source	8.2%
13	jQuery BlockUI Allows you to block user interaction on the page or part of the page. FreeOpen source	7.7%
14	jQuery Easing Wilberfoss, North Yorkshire, United Kingdom A jQuery plugin that adds 10+ advanced easing animations. FreeOpen source	6.8%
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	6.8%
16	Lightbox San Francisco, California, United States The original lightbox library used to overlay images on top of the current page. FreeOpen source	6.6%
17	FlexSlider San Francisco, California, United States A responsive jQuery slider created by the WooCommerce team and included with WooCommerce. FreeOpen source	6.5%
18	Isotope Alexandria, Virginia, United States A commercial JavaScript library for creating filterable and sortable grid layouts. FreeOpen source$25+	6.3%
19	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	5.4%
20	MediaElement.js Dallas, Texas, United States A free, open-source HTML5 audio and video player that enables playback of MP4, WebM, and MP3 media files as well as streamed content in HLS and MPEG-DASH formats. FreeOpen source	5%
21	🏩 Masonry Alexandria, Virginia, United States A JavaScript layout library that produces a Pinterest-style cascading grid where elements are organized in a compact, space-efficient layout. FreeOpen source	4.6%
22	Popper Monza, Italy A JavaScript library used for positioning and displaying tooltips, popovers, and dropdowns. FreeOpen source	4.6%
23	Select2 Boston, Massachusetts, United States A jQuery-based replacement for HTML select elements that enhances dropdown inputs with advanced search and selection capabilities. FreeOpen source	4.5%
24	React Menlo Park, California, United States A popular open-source JavaScript library for building dynamic user interfaces, created by Facebook. FreeOpen source	4.5%
25	jQuery Cookie A deprecated jQuery plugin for reading, writing and deleting cookies. FreeOpen sourceLegacy	4.3%

👉 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 13,567 websites from Bulgaria.
We currently track the presence of 311 JavaScript libraries across the web.
Of these, 254 were detected on websites from Bulgaria.
Statistics were last calculated on June 19, 2026.
For more details, see our methodology and disclaimer.