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 |
|---|---|---|---|
| royalwelt.de | #365,835 | Bootstrap, Contabo Object Storage, Fancybox + 6 more | Find emails |
| legacywagerhouse.com | #365,858 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| turboupload.com | #365,868 | Amazon Route 53, Chartbeat, DigiCert + 2 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | dreamhost.com | #677 (Tranco) | Find emails |
| primecardsgrid.nl | #365,869 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| goldarena.us | #365,873 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| ldpc.us | #365,930 | ASP.NET, Bootstrap, Chart.js + 12 more | Find emails |
| humantransit.org | #365,931 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 5 more | Find emails |
| lumenblackjackstudio.nl | #365,937 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| eblock.com | #365,940 | Amazon CloudFront, Amazon Route 53, Amazon S3 + 13 more | Find emails |
| recursion.com | #365,946 | AWS Lambda, Adobe Experience Cloud (Launch), Adobe Fonts (Typekit) + 21 more | Find emails |
| globalserviceslab.de | #365,960 | Bootstrap, Contabo Object Storage, Fancybox + 6 more | Find emails |
| primereelsplatform.com | #365,988 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| topsknives.com | #366,003 | Apache, Let's Encrypt, jQuery + 4 more | Find emails |
| linuxsquare.net | #366,044 | Apache, Bootstrap, Let's Encrypt + 2 more | Find emails |
| plovdiv.bg | #366,072 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| mentotomewah.com | #366,102 | Bootstrap, Cloudflare, Cloudflare Bot Management + 15 more | Find emails |
| boldhub.de | #366,118 | Bootstrap, Contabo Object Storage, Fancybox + 6 more | Find emails |
| solidstream.de | #366,147 | Bootstrap, Contabo Object Storage, Fancybox + 6 more | Find emails |
| deltaspinszone.nl | #366,150 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| novagroupprime.nl | #366,163 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 9 more | Find emails |
| budbee.com | #366,171 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| loanfactory.com | #366,195 | FlagCDN, Font Awesome, Google Analytics + 11 more | Find emails |
| gitd.gov.pl | #366,227 | Font Awesome, jQuery, Angular | Find emails |
| webcam-hd.com | #366,278 | ASP.NET, AngularJS, Bootstrap + 6 more | Find emails |
| stellarroyalflow.nl | #366,289 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 8 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 →