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 |
|---|---|---|---|
| alleghenycounty.us | #111,279 | Akamai mPulse, Azure DNS, Google Fonts + 4 more | Find emails |
| maverick.to | #111,413 | Let's Encrypt, WordPress, Yoast SEO + 1 more | Find emails |
| telekom.pl | #111,446 | Bootstrap, Font Awesome, Google Analytics + 5 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| sspnet.org | #111,520 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| eatyourbooks.com | #111,582 | ASP.NET, Bootstrap, Cloudflare + 13 more | Find emails |
| hs-worms.de | #111,684 | Matomo, TYPO3, jQuery | Find emails |
| fantasyfootballscout.co.uk | #111,703 | Google Fonts, Google Tag Manager, Let's Encrypt + 7 more | Find emails |
| ubmdns.com | #111,709 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 3 more | Find emails |
| zorin-os.com | #111,880 | Let's Encrypt, Namecheap, Netlify + 1 more | Find emails |
| parktool.com | #111,947 | Font Awesome, Google Tag Manager, Sectigo + 1 more | Find emails |
| charitybuzz.com | #111,951 | Adobe Fonts (Typekit), Amazon (ACM), Amazon Route 53 + 15 more | Find emails |
| fooby.ch | #111,961 | Google Analytics, Microsoft 365, Tealium | Find emails |
| brettworks.net | #112,027 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| pushgaming.com | #112,029 | Cloudflare, Google Analytics, Google Tag Manager + 4 more | Find emails |
| fitx.de | #112,047 | Adobe Fonts (Typekit), Amazon Route 53, Contentful + 5 more | Find emails |
| scribens.fr | #112,149 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 7 more | Find emails |
| structurae.net | #112,159 | Cloudflare, Cloudflare edge/CDN, Fancybox + 9 more | Find emails |
| 5.ua | #112,201 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| inzynierbudownictwa.pl | #112,240 | Bootstrap, CookieYes, DigiCert + 12 more | Find emails |
| servaxnet.com | #112,319 | Google Analytics, Google Fonts, Google Tag Manager + 8 more | Find emails |
| afriregister.co.ke | #112,492 | Bootstrap, Fancybox, Let's Encrypt + 4 more | Find emails |
| gmate.co.kr | #112,508 | AOS, Google Analytics, Google Tag Manager + 7 more | Find emails |
| appointy.com | #112,569 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| allergywest.com.au | #112,806 | Font Awesome, Google Analytics, Google Maps + 3 more | Find emails |
| pittsburghpa.gov | #112,916 | Akamai Bot Manager, Akamai mPulse, Google Cloud DNS + 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 →