JavaScript Library & Framework
16,473 of the 965,200 top sites in our Tranco top-1M census run Modernizr (1.7%). A JavaScript library that detects which HTML5/CSS3 features a browser supports, enabling progressive enhancement. Detection is homepage-level HTML/header fingerprinting, so a site can run Modernizr on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | mit.edu | #225 (Tranco) | Find emails |
| 2 | npr.org | #466 (Tranco) | Find emails |
| 3 | uk.com | #532 (Tranco) | Find emails |
| 4 | cornell.edu |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| electricbikereport.com | #507,444 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| neoncardshouse.nl | #507,473 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| taisho-beauty.jp | #507,490 | Amazon CloudFront, Amazon Route 53, Font Awesome + 9 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| marketersgo.com | #507,515 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| webcortex.com | #507,516 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| westdean.ac.uk | #507,603 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| 889992772.xyz | #507,666 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| sec.co.uk | #507,719 | Fastly, Font Awesome, Google Tag Manager + 4 more | Find emails |
| rackons.in | #507,732 | Bootstrap, Font Awesome, Google Fonts + 4 more | Find emails |
| studiocanal.com | #507,752 | Google Fonts, Nginx, Sectigo + 4 more | Find emails |
| policia.edu.co | #507,771 | Font Awesome, Google Analytics, Google Fonts + 4 more | Find emails |
| stlpartners.com | #507,783 | Cloudflare Bot Management, Cloudflare edge/CDN, Fancybox + 15 more | Find emails |
| lospiffero.com | #507,794 | Adobe Experience Cloud (Launch), Bootstrap, Cookiebot + 10 more | Find emails |
| contactcenterworld.com | #507,797 | ASP.NET, Bootstrap, DigiCert + 8 more | Find emails |
| shoppinder.com | #507,828 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| scriptha.ir | #508,005 | Font Awesome, Let's Encrypt, WooCommerce + 3 more | Find emails |
| onma.me | #508,057 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| deventrade.com | #508,121 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| againstallgrain.com | #508,190 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| sommerhusedanmark.dk | #508,229 | ASP.NET, Bootstrap, Google Ads Conversion + 8 more | Find emails |
| wowwee.com | #508,272 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| mellowmellowhq.com | #508,348 | Let's Encrypt, Nginx, Slick Carousel + 1 more | Find emails |
| directoryindexer.com | #508,503 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| bcnrestaurantes.com | #508,515 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| kowr.gov.pl | #508,528 | Font Awesome, jQuery, Angular | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →