⚡ CSS JavaScript Libraries

JavaScript CSS libraries allow developers to manage and enhance Cascading Style Sheets through JavaScript-based logic.

They typically support dynamic styling, theming, responsive behavior handling, CSS preprocessing or polyfills, animation control, and runtime style updates to improve flexibility and cross-browser consistency.

Statistics based on 3.4M+ analyzed websites. About this data

⭐ Most Popular in 2026

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

The most popular is Less.js with a share of 0.5%, followed by Emotion with 0.4% and Styled Components with 0.4%.

Less.js 0.5%
Emotion 0.4%
Styled Components 0.4%
Enquire.js 0.2%
css-vars-ponyfill 0.2%
Critters 0.1%
Animsition 0.1%
Prefix-free 0.08%
Beasties 0.07%
Motion UI 0.05%

✨ Best CSS JavaScript Libraries

Below is a more detailed list of 10 CSS JavaScript libraries we detect, ranked by their market share.

Available filters: 2D-Graphics 3D-Graphics Animation Carousel CSS Data Grids DOM Editors Lightbox Scroll SPA State Utility UI

Rank	Name	Market share
1	Less.js A JavaScript library that converts Less styles to CSS styles. FreeOpen source	0.5%
2	Emotion A framework agnostic library designed for writing CSS styles with JavaScript. FreeOpen source	0.4%
3	Styled Components A library for React that allows developers to write CSS directly in JS to style components. FreeOpen source	0.4%
4	Enquire.js A lightweight, pure JavaScript library for responding to CSS media queries. FreeOpen source	0.2%
5	css-vars-ponyfill Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers. FreeOpen source	0.2%
6	Critters San Francisco, California, United States A deprecated Webpack plugin that inlines your app's critical CSS and lazily loads the rest. FreeOpen sourceLegacy	0.1%
7	Animsition A simple jQuery plugin for CSS animated page transitions. FreeOpen source	0.1%
8	Prefix-free A legacy script that adds browser prefixes to CSS code when needed for old browsers. FreeOpen sourceLegacy	0.08%
9	Beasties Edinburgh, United Kingdom A plugin that inlines your app's critical CSS and lazy-loads the rest. FreeOpen source	0.07%
10	Motion UI Campbell, California, United States A Sass library for creating flexible CSS transitions and animations. FreeOpen source	0.05%

👉 See Also

✨ Related technologies
- CSS

🗃️ 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 3,406,701 websites.
We currently track the presence of 310 JavaScript libraries across the web.
Statistics were last calculated on May 6, 2026.
For more details, see our methodology and disclaimer.