JavaScript Library & Framework
27,702 of the 1,000,000 top sites in our Tranco top-1M census run Modernizr (2.8%). 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 |
|---|---|---|---|
| whdl.org | #179,498 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| cvcrm.com.br | #179,504 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| ucalp.edu.ar | #179,620 | Apache, Bootstrap, Bunny Fonts + 12 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | dreamhost.com | #677 (Tranco) | Find emails |
| flyer.co.uk |
| #179,675 |
| Bootstrap, Cloudflare, Cloudflare edge/CDN + 20 more |
| Find emails |
| socialimarketing.com | #179,750 | Bootstrap, Cloudflare, Cloudflare Bot Management + 9 more | Find emails |
| biznes-polska.pl | #179,807 | Cloudflare, DigiCert, DoubleClick (Google Ads) + 5 more | Find emails |
| hme.com | #179,846 | ASP.NET, Drupal, Google Analytics + 3 more | Find emails |
| monitoring.bg | #179,867 | ASP.NET, Bootstrap, Google Fonts + 7 more | Find emails |
| openit.se | #179,904 | Google AdSense, Google Analytics, Google Hosted Libraries + 5 more | Find emails |
| salzburg-airport.com | #179,918 | Apache, DigiCert, Google Tag Manager + 1 more | Find emails |
| crowdreviews.com | #179,927 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| strefaedukacji.pl | #179,934 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 15 more | Find emails |
| internetwebsolutions.net | #179,964 | Apache, Bootstrap, Chart.js + 8 more | Find emails |
| mformula.net | #179,993 | Apache, Google Analytics, Google Hosted Libraries + 8 more | Find emails |
| alding.com | #180,041 | Bootstrap, Font Awesome, Let's Encrypt + 5 more | Find emails |
| unix-solutions.be | #180,112 | Apache, Bootstrap, Google Fonts + 5 more | Find emails |
| lovin.co | #180,160 | Amazon (ACM), Amazon Route 53, Apache + 16 more | Find emails |
| ncctinc.com | #180,185 | ASP.NET, Bootstrap, DigiCert + 9 more | Find emails |
| sunandski.com | #180,220 | Affirm, Cloudflare Bot Management, Cloudflare Turnstile + 11 more | Find emails |
| nevadahealthlink.com | #180,351 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| lyrikline.org | #180,386 | Apache, Bootstrap, Concrete CMS + 4 more | Find emails |
| devil69porn.tv | #180,402 | Bulma, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| baincapital.com | #180,486 | Amazon (ACM), Apache, Bootstrap + 13 more | Find emails |
| e4education.co.uk | #180,565 | Adobe Fonts (Typekit), Font Awesome, Google Tag Manager + 3 more | Find emails |
| paloalto.gov | #180,576 | Akamai edge/CDN, Akamai mPulse, Google Ads Conversion + 10 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 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →