As of October 21, 2026, Modernizr is used by 979,439 websites in the TechLeads index: 5.7% of all Compatibility detections, the 2nd most-used of 14 Compatibility technologies.
Quoting these numbers? Credit TechLeads with a link to this page.
Citation
TechLeads. "Modernizr Customers and Market Share." Data as of October 21, 2026. https://techleads.fyi/technology/modernizr/market-shareHTML link
<a href="https://techleads.fyi/technology/modernizr/market-share">Modernizr market share (TechLeads data)</a>Websites using each technology in the TechLeads index, and its share of all Compatibility detections.
| # | Technology | Websites | Share |
|---|---|---|---|
| 1 | jQuery Migrate | 15,591,932 | 90.1% |
| 2 | Modernizr | 979,439 | 5.7% |
| 3 | HTML5 Mobile Boilerplate | 423,371 | 2.4% |
| 4 | Respond | 277,110 | 1.6% |
| 5 | PNG Fix | 29,113 | 0.17% |
| 6 | html5shiv | 1,212 | 0.01% |
Rows link to each competitor's market share page where one exists. The table lists the 6 most-used technologies; ranks are by website count.
In HTTP Archive's monthly crawl of public websites, Modernizr was detected on 3,956,550 pages in September 2026, down 20.4% from a year earlier (peak: 7,029,696). Among the 1,000 most-visited sites, it appeared on 28. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.
Same month, other JavaScript Libraries technologies in HTTP Archive: jQuery 32,400,479, core-js 20,296,277, jQuery Migrate 14,931,388, jQuery UI 10,564,965, Swiper 7,844,933.
See all 979,439 websites using Modernizr or download the full list as a CSV for $29.
TechLeads scans public websites and detects Modernizr from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Modernizr's website count divided by the website counts of all Compatibility technologies we track; a site using two Compatibility tools counts for both. Counts were last refreshed on October 21, 2026 and update daily.