🆚 Polyfill vs. Regenerator

Compare technologies based on real-world usage data *

📈 Polyfill is twice as popular as Regenerator.
🌍 Polyfill is more popular in all countries.

Polyfill

Regenerator

Type

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.

Regenerator is a JavaScript library from Facebook that allows the use of ES6 generators in older browsers.

Headquarters

Menlo Park, California, United States

Website

cdnjs.cloudflare.com/polyfill

facebook.github.io/regenerator/

Pricing

Free ✔️Open source

Popularity

Determined by the number of sites using each technology.

The Polyfill JavaScript library is 2.4 times more popular than Regenerator.

Total websites

Market share

JavaScript Libraries

Popularity by country

Determined by the number of sites detected from each country.

Polyfill is more popular than Regenerator in all countries.

United States

United Kingdom

Japan

Spain

Australia

Germany

Italy

France

Russia

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.

⭐ 9th most popular in Australia in the JavaScript Libraries category.
⭐ 10th most popular in Thailand in the JavaScript Libraries category.
🔥 12nd most popular in Vietnam in the JavaScript Libraries category.
🔥 12nd most popular in Israel in the JavaScript Libraries category.
🔥 12nd most popular in Afghanistan 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 Regenerator is more commonly used on sports, recreation and hobbies, and restaurants sites.

Business

Marketing/Merchandising

Online Shopping

Blogs/Wiki

Education/Reference

Internet Services

Travel

Health

Entertainment

Non-Profit/Advocacy/NGO