Polyfill IO

Category - JavaScript Libraries

Polyfill.io is a service which makes web development less frustrating by selectively polyfilling just what the browser needs. Polyfill.io reads the User-Agent header of each request and returns polyfills that are suitable for the requesting browser



We have discovered 3,178,544 live websites that are using Polyfill IO.

Download website list

Technology usage statistics

Websites using Polyfill IO 3,178,544 websites
Most popular in the country United States of America
Market position in JavaScript Libraries #6
Market share in JavaScript Libraries 3.13%

Technology adoption

Recent changes in Polyfill IO usage. (See Polyfill IO Usage Changes report)
Websites that added Polyfill IO +252,785
Websites that dropped Polyfill IO -80,117

Distribution by websites popularity

Polyfill IO detection in the top websites by popularity
Top 10k sites 1,171 websites
Top 100k sites 9,458 websites
Top 1m sites 78,805 websites

Websites utilizing Polyfill IO

Top websites that use Polyfill IO

Domain Country Rank Contacts
twitter.com United States of America 3
vimeo.com United States of America 26
wordpress.com United States of America 32
code.jquery.com United States of America 50
www.theguardian.com United States of America 52
www.imdb.com United States of America 55
See full domain list
Flat price per the report, subscription is not required.

Market Share

Polyfill IO market share within the JavaScript Libraries category

Geographical Distribution

Technology usage distribution by websites across the globe.








Alternative Technologies


AD Gallery: Total 5,002 domains found using AD Gallery
Alertify JS: Total 9,754 domains found using Alertify JS
Amaze UI: Total 5,966 domains found using Amaze UI
Answers: Total 515 domains found using Answers
AnythingSlider: Total 10,111 domains found using AnythingSlider
Apache ECharts: Total 3,643 domains found using Apache ECharts
Apollo: Total 3,805 domains found using Apollo
Basic jQuery Slider: Total 12,188 domains found using Basic jQuery Slider
basket.js: Total 27 domains found using basket.js
Bifrost: Total 1,806 domains found using Bifrost