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 |
|---|---|---|---|
| cmv-sportmedia.de | #535,789 | Bootstrap, Clicky, Cloudflare + 10 more | Find emails |
| sweet-directory.com | #535,829 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| onousc.ma | #535,872 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| firstdirectbankarena.com | #535,892 | Cloudflare, Fastly, Font Awesome + 10 more | Find emails |
| montaweb.com | #535,895 | Let's Encrypt, Nginx, PHP + 1 more | Find emails |
| kannuruniversity.ac.in | #535,995 | Bootstrap, Django, Font Awesome + 4 more | Find emails |
| arthaloka-teknologi.co.id | #536,075 | Bootstrap, Font Awesome, Mailchimp + 5 more | Find emails |
| bloggingheads.tv | #536,132 | Amazon Route 53, Google AdSense, Google Ads Conversion + 6 more | Find emails |
| planet-ocean-hosting.de | #536,159 | Font Awesome, Let's Encrypt, Nginx + 2 more | Find emails |
| atom.co.id | #536,164 | Google Fonts, Let's Encrypt, PHP + 4 more | Find emails |
| cuj.ac.in | #536,171 | Bootstrap, Font Awesome, Let's Encrypt + 2 more | Find emails |
| gkb81.ru | #536,228 | Font Awesome, Let's Encrypt, Nginx + 4 more | Find emails |
| act365.net | #536,467 | ASP.NET, Bootstrap, Font Awesome + 3 more | Find emails |
| apextoolandsupply.com | #536,566 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 11 more | Find emails |
| arcanite.ch | #536,590 | Bootstrap, Hugo, Leaflet + 1 more | Find emails |
| baishirun.com | #536,648 | Bootstrap, Chart.js, Font Awesome + 4 more | Find emails |
| bluedu.com.br | #536,702 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 4 more | Find emails |
| calgaryhyundai.com | #536,762 | Cloudflare Bot Management, Cloudflare edge/CDN, CrazyEgg + 16 more | Find emails |
| carsexport.eu | #536,779 | Bootstrap, Fancybox, Font Awesome + 6 more | Find emails |
| couponsavings.ae | #536,911 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| eibabo.es | #537,100 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| energycloud.cz | #537,128 | Bootstrap, DigiCert, Google Analytics + 6 more | Find emails |
| esjzone.cc | #537,149 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| everythingpetsandsupplies.com | #537,168 | Bootstrap, Cloudflare, Cloudflare Turnstile + 12 more | Find emails |
| friendspool.club | #537,278 | Bootstrap, Font Awesome, Google Analytics + 5 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 →