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 |
|---|---|---|---|
| designconnected.com | #508,538 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| superkingmarkets.com | #509,088 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| fit4mom.com | #509,099 | Adobe Fonts (Typekit), Google Analytics, Google Tag Manager + 3 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| trueroulettepro.com | #509,177 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| andreamarazzini.it | #509,197 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 11 more | Find emails |
| copaargentina.org | #509,231 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| nhm.it | #509,373 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| seozdirectory.com | #509,430 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| klinikasochi.com | #509,527 | Bootstrap, Font Awesome, Let's Encrypt + 2 more | Find emails |
| makita.co.nz | #509,639 | Adobe Fonts (Typekit), Cloudflare, Google Ads Conversion + 7 more | Find emails |
| gerardoortiz.com | #509,658 | Bootstrap, DigiCert, Microsoft 365 + 4 more | Find emails |
| ikhwanonline.com | #509,686 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| shinyuri-hospital.com | #509,706 | Amazon (ACM), Amazon CloudFront, Google Tag Manager + 1 more | Find emails |
| megaxus.com | #509,710 | Foundation, Google Analytics, Google Tag Manager + 5 more | Find emails |
| schmiedmann.de | #509,818 | ASP.NET, Bootstrap, Font Awesome + 3 more | Find emails |
| kcua.ac.jp | #509,861 | Bootstrap, Google Fonts, Google Maps + 3 more | Find emails |
| belnauka.by | #509,947 | Joomla, Let's Encrypt, Nginx + 1 more | Find emails |
| akbkeb.ru | #510,063 | Let's Encrypt, Nginx, Underscore.js + 1 more | Find emails |
| en.net.ua | #510,070 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| thecoderschool.com | #510,332 | Google Fonts, Google Tag Manager, Sucuri + 6 more | Find emails |
| chuohoki.co.jp | #510,350 | Amazon CloudFront, Google Analytics, Google Fonts + 4 more | Find emails |
| monetizationrays.com | #510,378 | Bootstrap, Django, Font Awesome + 5 more | Find emails |
| visionpokernetwork.com | #510,438 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| gilllawyers.com.au | #510,468 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 13 more | Find emails |
| rackspeed.net | #510,574 | Bootstrap, Cloudflare, Cloudflare Web 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 →