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 |
|---|---|---|---|
| gamebookers.com | #344,363 | Cloudflare Bot Management, Cloudflare edge/CDN, DigiCert + 2 more | Find emails |
| myvetstore.ca | #344,366 | ASP.NET, Azure API Management, Azure DNS + 11 more | Find emails |
| labournet.de | #344,386 | Let's Encrypt, Nginx, PHP + 4 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | dreamhost.com | #677 (Tranco) | Find emails |
| treeserviceiowacitypro.com | #344,413 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| mkk.de | #344,416 | Apache, Bootstrap, DigiCert + 7 more | Find emails |
| arch-world.com.tw | #344,438 | ASP.NET, Bootstrap, Cloudflare Turnstile + 11 more | Find emails |
| elpozo.com | #344,466 | All in One SEO, Apache, Bootstrap + 10 more | Find emails |
| quicktrail.us | #344,475 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| sourceesb.com | #344,495 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 16 more | Find emails |
| insa-rennes.fr | #344,506 | Apache, Bootstrap, Google Analytics + 5 more | Find emails |
| wayf.dk | #344,533 | Drupal, Let's Encrypt, Matomo + 2 more | Find emails |
| betaroulettestudio.nl | #344,562 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| sdzyhc.com | #344,564 | ASP.NET, Baidu Analytics, Bootstrap + 3 more | Find emails |
| aerolab.nl | #344,591 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| pmgnotes.com | #344,592 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| supremeluckycentral.com | #344,616 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| nitte.edu.in | #344,631 | Blogger, Bootstrap, Google Analytics + 7 more | Find emails |
| ultimateluckyplatform.com | #344,658 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| novagamingplus.nl | #344,676 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| socdirectory.com | #344,709 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| directory-2020.com | #344,753 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| smartgrove.us | #344,760 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| bauschhealth.com | #344,803 | Azure API Management, Bootstrap, Cloudflare edge/CDN + 12 more | Find emails |
| invisiblechildren.com | #344,867 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 14 more | Find emails |
| globalservicesspace.de | #344,986 | Bootstrap, Contabo Object Storage, Fancybox + 6 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 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →