🆚 Polyfill vs. Web Font Loader
- 📈 Polyfill is three times more popular than Web Font Loader.
- 🌎 Polyfill is more popular in the United States, the United Kingdom, and Japan.
- 🌍 Web Font Loader is more popular in Korea, Saint Vincent and the Grenadines, and Burkina Faso.
Statistics based on 3.3M+ analyzed websites. About this data
Polyfill
Web Font LoaderType
JavaScript library
JavaScript library
About
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.
The Web Font Loader is a JavaScript library that gives you added control when using linked fonts via @font-face.
Headquarters
San Jose, California, United States
cdnjs.cloudflare.com/polyfill
GitHubPricing
Free ✔️Open source
Free ✔️Open source
Categories
JavaScript Libraries › Rank #4
JavaScript Libraries › Rank #27
Popularity
Determined by the number of sites using each technology.
The Polyfill JavaScript library is 2.9 times more popular than Web Font Loader.
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 Japan, while Web Font Loader is more popular in Korea, Saint Vincent and the Grenadines, and Burkina Faso.
United States
United Kingdom
Japan
Germany
Spain
Russia
France
Italy
Australia
Netherlands
Awards
- 🥈 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.
- ⭐ 5th most popular in Saint Vincent and the Grenadines in the JavaScript Libraries category.
- 🔥 16th most popular in Poland in the JavaScript Libraries category.
- 🔥 17th most popular in Japan in the JavaScript Libraries category.
- 🔥 18th most popular in the Czech Republic in the JavaScript Libraries category.
- 🔥 18th most popular in Slovakia 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 Web Font Loader is more commonly used on sports, restaurants, and games sites.
Business
Marketing/Merchandising
Online Shopping
Blogs/Wiki
Education/Reference
Internet Services
Travel
Entertainment
Health
Non-Profit/Advocacy/NGO
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
Regenerator
Fastly Polyfill
Babel
jQuery
Adobe 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 3,371,563 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.