🆚 css-vars-ponyfill vs. StyleX
- 📈 css-vars-ponyfill is noticeably more popular than StyleX.
- 🌎 css-vars-ponyfill is more popular in the United States, the United Kingdom, and Canada.
- 🌍 StyleX is more popular in Germany, France, and Italy.
Statistics based on 3.8M+ analyzed websites. About this data
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 #135
JavaScript Libraries › Rank #157
Popularity
Determined by the number of sites using each technology.
The css-vars-ponyfill JavaScript library is 1.3 times more popular than StyleX.
Total websites
Market share
JavaScript Libraries
Popularity by country
Determined by the number of sites detected from each country.
css-vars-ponyfill is more popular in the United States, the United Kingdom, and Canada, while StyleX is more popular in Germany, France, and Italy.
United States
United Kingdom
Germany
France
Canada
Japan
Italy
Australia
Poland
Austria
Awards
- ⬆️ 68th most popular in Austria in the JavaScript Libraries category.
- ⬆️ 72nd most popular in Finland in the JavaScript Libraries category.
- ⬆️ 93rd most popular in Denmark in the JavaScript Libraries category.
- ⬆️ 94th most popular in Canada in the JavaScript Libraries category.
- ⬆️ 94th most popular in New Zealand in the JavaScript Libraries category.
- ⬆️ 79th most popular in Hungary in the JavaScript Libraries category.
- ⬆️ 82nd most popular in the Czech Republic in the JavaScript Libraries category.
- ⬆️ 89th most popular in Poland in the JavaScript Libraries category.
- ⬆️ 100th most popular in Vietnam in the JavaScript Libraries category.
- ⬆️ 105th most popular in Romania in the JavaScript Libraries category.
Popularity by domain category
Determined by the number of sites in each category.
css-vars-ponyfill is more popular among sites focused on online shopping, business, and marketing and merchandising, while StyleX is more commonly used on education and reference, blogs and wiki, and entertainment sites.
Online Shopping
Business
Marketing/Merchandising
Travel
Education/Reference
General News
Blogs/Wiki
Entertainment
Fashion/Beauty
Non-Profit/Advocacy/NGO
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Meta company profile🗃️ 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 3,815,889 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.