🆚 Modernizr vs. Polyfill
- 📈 Polyfill is noticeably more popular than Modernizr.
- 🌎 Polyfill is more popular in the United States, the United Kingdom, and Germany.
- 🌍 Modernizr is more popular in Turkey, Korea, and Taiwan.
Statistics based on 3.4M+ analyzed websites. About this data
PolyfillType
JavaScript library
JavaScript library
About
Modernizr is a 
JavaScript library that detects the availability of 
HTML, 
CSS and JavaScript features in the user's browser.
Polyfill.io is an open-source JavaScript library that provides modern web API features to older browsers that do not natively support them.
After a supply chain attack in 2024 involving its cdn.polyfill.io domain, the service was discontinued and is now safely mirrored and maintained by 
Cloudflare under independent management.
Pricing
Free ✔️Open source
Free ✔️Open source
Categories
JavaScript Libraries › Rank #12
JavaScript Libraries › Rank #4
Popularity
Determined by the number of sites using each technology.
The Polyfill JavaScript library is 1.6 times more popular than Modernizr.
Total websites
Market share
JavaScript Libraries
Popularity by country
Determined by the number of sites detected from each country.
Polyfill is more popular in the United States, the United Kingdom, and Germany, while Modernizr is more popular in Turkey, Korea, and Taiwan.
United States
United Kingdom
Germany
Italy
Japan
Spain
Russia
France
Australia
Netherlands
Awards
- 🥉 Third most popular in Liechtenstein in the JavaScript Libraries category.
- ⭐ 4th most popular in Macao in the JavaScript Libraries category.
- ⭐ 5th most popular in Luxembourg in the JavaScript Libraries category.
- ⭐ 5th most popular in Lebanon in the JavaScript Libraries category.
- ⭐ 6th most popular in Switzerland in the JavaScript Libraries category.
- 🥈 Second most popular in Russia in the JavaScript Libraries category.
- 🥈 Second most popular in Belarus in the JavaScript Libraries category.
- 🥈 Second most popular in Jamaica in the JavaScript Libraries category.
- 🥈 Second most popular in Curacao in the JavaScript Libraries category.
- 🥈 Second most popular in the Turks and Caicos Islands in the JavaScript Libraries category.
Popularity by domain category
Determined by the number of sites in each category.
Polyfill is more popular among sites focused on business, marketing and merchandising, and online shopping, while Modernizr is more commonly used on public information, government and military, and alcohol sites.
Business
Marketing/Merchandising
Online Shopping
Education/Reference
Blogs/Wiki
Internet Services
Travel
Entertainment
Health
Non-Profit/Advocacy/NGO
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
jQuery
UAParser.js
LocalForage
Regenerator
Fastly Polyfill
Babel🗃️ 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 3,431,368 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.