🆚 Fastly Polyfill vs. Modernizr
- 📈 Modernizr is much more popular than Fastly Polyfill.
- 🌍 Modernizr is more popular in all countries.
Statistics based on 3.8M+ analyzed websites. About this data
Fastly Polyfill
ModernizrType
JavaScript library
JavaScript library
About
Fastly Polyfill is a service that reads the User-Agent header of each request and returns polyfills appropriate for the requesting browser.
Modernizr is an open-source feature detection library that identifies browser support for 
HTML, 
CSS, and 
JavaScript features and allows websites to adapt accordingly.
It enables developers to detect supported browser features at runtime, apply progressive enhancement, load polyfills only when required, and provide fallbacks for unsupported features.
Headquarters
San Francisco, California, United States
Pricing
Free ✔️ Open source
Free ✔️ Open source
Categories
JavaScript Libraries › Rank #118
JavaScript Libraries › Rank #11
Popularity
Determined by the number of sites using each technology.
The Modernizr JavaScript library is 28 times more popular than Fastly Polyfill.
Total websites
Market share
JavaScript Libraries
Popularity by country
Determined by the number of sites detected from each country.
Modernizr is more popular than Fastly Polyfill in all countries.
United States
United Kingdom
Germany
Italy
Spain
France
Japan
India
Australia
Canada
Awards
- ⬆️ 87th most popular in Canada in the JavaScript Libraries category.
- ⬆️ 91st most popular in Sweden in the JavaScript Libraries category.
- ⬆️ 94th most popular in Australia in the JavaScript Libraries category.
- ⬆️ 96th most popular in Denmark in the JavaScript Libraries category.
- ⬆️ 98th most popular in Ireland in the JavaScript Libraries category.
- ⭐ 6th most popular in Lebanon in the JavaScript Libraries category.
- ⭐ 7th most popular in Germany in the JavaScript Libraries category.
- ⭐ 7th most popular in Bulgaria in the JavaScript Libraries category.
- ⭐ 7th most popular in Croatia in the JavaScript Libraries category.
- ⭐ 7th most popular in Luxembourg in the JavaScript Libraries category.
Popularity by domain category
Determined by the number of sites in each category.
Modernizr is more popular than Fastly Polyfill in all market segments.
Business
Marketing/Merchandising
Education/Reference
Online Shopping
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.
🗃️ 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 3,814,833 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.