🆚 css-vars-ponyfill vs. StyleX
Statistics for StyleX are still being collected and do not yet reflect its full market share.
StyleXType
JavaScript library
JavaScript library
About
Client-side support for 
CSS custom properties (aka "CSS variables") in legacy and modern browsers.
StyleX is an open-source styling system and CSS-in-JS library developed by Meta for building and maintaining large-scale web applications.
It compiles styles to static, collision-free atomic CSS rules at build time, supports type-safe style definitions, media queries, pseudo-classes, theming through shared variables, and is designed to eliminate runtime style injection overhead.
Headquarters
Menlo Park, California, United States
Pricing
Free ✔️Open source
Free ✔️Open source
Categories
JavaScript Libraries › Rank #142
JavaScript Libraries › Rank #226
Popularity
Determined by the number of sites using each technology.
Total websites
Market share
JavaScript Libraries
Popularity by country
Determined by the number of sites detected from each country.
United States
United Kingdom
Germany
Japan
Canada
Australia
France
Austria
India
Italy
Awards
- ⬆️ 76th most popular in Austria in the JavaScript Libraries category.
- ⬆️ 88th most popular in New Zealand in the JavaScript Libraries category.
- ⬆️ 95th most popular in Finland in the JavaScript Libraries category.
- ⬆️ 101st most popular in Denmark in the JavaScript Libraries category.
- ⬆️ 103rd most popular in Canada in the JavaScript Libraries category.
- ⬆️ 151st most popular in Poland in the JavaScript Libraries category.
- ⬆️ 153rd most popular in the Czech Republic in the JavaScript Libraries category.
- ⬆️ 206th most popular in France in the JavaScript Libraries category.
- ⬆️ 206th most popular in Italy in the JavaScript Libraries category.
- ⬆️ 207th most popular in Germany in the JavaScript Libraries category.
Popularity by domain category
Determined by the number of sites in each category.
Online Shopping
Business
Marketing/Merchandising
General News
Fashion/Beauty
Travel
Education/Reference
Entertainment
Internet Services
Blogs/Wiki
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Emotion
Animsition
Beasties
Styled Components
Tailwind 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 3,528,374 websites. However, data for StyleX is still being collected and reflects a smaller subset of sites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.