About Polyfill
Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.
How many people use Polyfill
GitHub · npm- #97dc.js7.4k
- #98
decimal.js7.3k - #99Screenfull.js7.1k
- #100
Polyfill7.1k
- #101TogetherJS7k
- #102
Lightbox6.4k
- #103
lite-youtube-embed6.3k
#100 of 198 JavaScript libraries we have counts for (of 232) · bars are GitHub stars across these neighbours; the category leader is Axios at 109k · as of September 7, 2026
Compare
#100 of 198 JavaScript libraries
#99 of 198 JavaScript libraries
Audit any site that runs Polyfill.
Enter a URL to score its stack for technology quality, version health, Lighthouse performance - and AI-readiness.
How we audit Polyfill
We measure the detected version against Polyfill's release history and grade the surrounding stack with a Lighthouse-grade quality audit. Weak or outdated links weigh more - one risky dependency can pull the whole score down.
How the score worksMore technologies in JavaScript libraries
View all →Technology definitions from a community-maintained catalogue, licensed GPL-3.0. Attribution and source.