🆚 Polyfill vs. X for Websites

Compare technologies based on real-world usage data *

📈 Polyfill is five times more popular than X for Websites.
🌎 Polyfill is more popular in the United States, Japan, and the United Kingdom.
🌍 X for Websites is more popular in Rwanda, Mongolia, and the Maldives.

Polyfill

X for Websites

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.

X for Websites is a suite of tools bringing X content and functionality to your webpages and apps, enabling the X audience to share your content, and follow your X accounts.

Headquarters

Bastrop, Texas, United States

Website

cdnjs.cloudflare.com/polyfill

developer.x.com

Pricing

Free ✔️Open source

Popularity

Determined by the number of sites using each technology.

The Polyfill JavaScript library is 5 times more popular than X for Websites.

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, Japan, and the United Kingdom, while X for Websites is more popular in Rwanda, Mongolia, and the Maldives.

United States

Japan

United Kingdom

Spain

Russia

Germany

Italy

France

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.

⭐ 6th most popular in Japan in the JavaScript Libraries category.
⭐ 9th most popular in Rwanda in the JavaScript Libraries category.
🔥 13rd most popular in Mongolia in the JavaScript Libraries category.
🔥 16th most popular in Uganda in the JavaScript Libraries category.
⬆️ 25th most popular in Venezuela 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 X for Websites is more commonly used on sports sites.

Business

Marketing/Merchandising

Online Shopping

Blogs/Wiki

Education/Reference

Internet Services

Entertainment

Travel

Health

Non-Profit/Advocacy/NGO