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 |
|---|---|---|---|
| schmiedmann.es | #543,780 | ASP.NET, Bootstrap, Font Awesome + 4 more | Find emails |
| slotnet1042.de | #543,819 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| easymail.gr | #543,964 | Bootstrap, Fancybox, Font Awesome + 9 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| censupeg.com.br | #544,104 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 12 more | Find emails |
| levyleiloeiro.com.br | #544,183 | Amazon Route 53, Font Awesome, Foundation + 4 more | Find emails |
| partshopdirect.co.uk | #544,222 | Fancybox, Google Analytics, Microsoft Advertising (Bing UET) + 5 more | Find emails |
| eijffinger.com | #544,447 | ASP.NET, Google Tag Manager, Sectigo + 2 more | Find emails |
| recyclingpartnership.org | #544,490 | Cloudflare Bot Management, Cloudflare edge/CDN, CrazyEgg + 9 more | Find emails |
| mitropolia.kz | #544,560 | Bootstrap, Font Awesome, Google Analytics + 5 more | Find emails |
| duco.eu | #544,659 | ASP.NET, Adobe Fonts (Typekit), Fancybox + 11 more | Find emails |
| statecourts.org | #544,728 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| asunsports.org | #544,978 | ASP.NET, Amazon Route 53, Google Analytics + 6 more | Find emails |
| shambaza.com | #545,096 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| dynamobim.com | #545,100 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| cloud4data.com | #545,107 | Font Awesome, Google Analytics, Google Fonts + 7 more | Find emails |
| trhyfblog.com | #545,284 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 4 more | Find emails |
| whatworkswellbeing.org | #545,301 | Google Maps, Varnish, WordPress + 1 more | Find emails |
| netfolio.net | #545,397 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| oimge.com | #545,416 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| whatyouexpect.eu | #545,428 | Amazon Route 53, Google Fonts, Let's Encrypt + 3 more | Find emails |
| redpsi.com.ar | #545,438 | Amazon (ACM), Amazon Route 53, Bootstrap + 11 more | Find emails |
| deutsch-perfekt.com | #545,467 | Drupal, Google Publisher Tag, Google Tag Manager + 1 more | Find emails |
| brenk.com | #545,531 | Bootstrap, Font Awesome, Foundation + 4 more | Find emails |
| 889992841.xyz | #545,735 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| scratchspace.com | #545,796 | Drift, Font Awesome, Foundation + 9 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 →