About Modernizr
Modernizr is a JavaScript library that detects the features available in a user's browser.
How many people use Modernizr
GitHub · npm- #22
Underscore.js27k - #23NProgress26k
- #24
Select226k
- #25
Modernizr26k
- #26
core-js26k - #27
Howler.js25k
- #28
PhotoSwipe25k
#25 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
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#25 of 198 JavaScript libraries
#24 of 198 JavaScript libraries
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How we audit Modernizr
We measure the detected version against Modernizr'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 Weak or outdated links weigh more - one risky dependency can pull the whole score down.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
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