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 |
|---|---|---|---|
| socvirus.com.ua | #532,225 | Cloudflare, Font Awesome, Google AdSense + 5 more | Find emails |
| dillo.org | #532,435 | Font Awesome, Google Analytics, Google Fonts + 7 more | Find emails |
| mancomunitat-safor.es | #532,503 | Drupal, Font Awesome, Leaflet + 7 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| poppybarley.com | #532,559 | AOS, Adobe Fonts (Typekit), Affirm + 14 more | Find emails |
| bathtechllc.com | #532,582 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| joancee.com | #532,699 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| arhcustom.co.uk | #532,829 | Bootstrap, Font Awesome, Foundation + 16 more | Find emails |
| choptones.com | #532,841 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 8 more | Find emails |
| itapevarec.com.br | #532,954 | AngularJS, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| actual4labs.com | #533,213 | Bootstrap, Chart.js, Cloudflare + 9 more | Find emails |
| ff3l.net | #533,259 | Let's Encrypt, WordPress, jQuery | Find emails |
| quilmes.gov.ar | #533,289 | Bootstrap, Google Analytics, Google Fonts + 6 more | Find emails |
| kalo.de | #533,433 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| studiobinary.com | #533,690 | Font Awesome, Foundation, Google Fonts + 4 more | Find emails |
| najlacnejsiediely.sk | #533,783 | Fancybox, Google Fonts, Google Tag Manager + 4 more | Find emails |
| cyberblackjacklounge.nl | #533,812 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| percepto.co | #533,856 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| sanix.jp | #533,873 | Google Ads Conversion, Google Analytics, Google Fonts + 2 more | Find emails |
| referralexchange.com | #533,913 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 11 more | Find emails |
| systex.com | #533,918 | Azure DNS, DigiCert, Font Awesome + 8 more | Find emails |
| tell.ng | #533,940 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 8 more | Find emails |
| compasscard.ca | #533,966 | ASP.NET, Font Awesome, Google Analytics + 12 more | Find emails |
| stahlgruber.de | #534,063 | Matomo, Microsoft 365, Nginx + 4 more | Find emails |
| cleanwaterstore.com | #534,110 | Adobe Fonts (Typekit), Affirm, Cloudflare + 8 more | Find emails |
| visitbenidorm.es | #534,114 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | 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 →