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 |
|---|---|---|---|
| saptco.com.sa | #487,212 | Bootstrap, DigiCert, Font Awesome + 9 more | Find emails |
| spincentralonline.co.uk | #487,281 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| blcsrecruitment.com | #487,443 | ASP.NET, Bootstrap, Fancybox + 7 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| whiskyandmore.co.nz | #487,690 | Bootstrap, Cloudflare edge/CDN, Fancybox + 17 more | Find emails |
| waimao.us | #487,748 | Cloudflare, Let's Encrypt, Varnish + 1 more | Find emails |
| propartsdirect.net | #487,791 | ASP.NET, Affirm, Cloudflare + 6 more | Find emails |
| susla.edu | #487,795 | Amazon (ACM), Bootstrap, Google Ads Conversion + 8 more | Find emails |
| jabok.cz | #487,815 | Drupal, Font Awesome, Google Analytics + 8 more | Find emails |
| auktionshaus-saure.de | #487,851 | ASP.NET, Let's Encrypt, Meta Pixel | Find emails |
| iun.edu | #487,885 | Google Tag Manager, Microsoft 365, jQuery + 1 more | Find emails |
| jeeperstore.com | #488,029 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| mc-web.jp | #488,061 | Font Awesome, Google AdSense, Google Publisher Tag + 6 more | Find emails |
| specialeffect.org.uk | #488,209 | Adobe Fonts (Typekit), Font Awesome, Google Analytics + 9 more | Find emails |
| profhermes.ru | #488,232 | Font Awesome, Google Fonts, Let's Encrypt + 3 more | Find emails |
| phonesltd.co.uk | #488,349 | Bootstrap, Font Awesome, Google Ads Conversion + 13 more | Find emails |
| librairienumeriqueafricaine.com | #488,413 | Drupal, Sectigo, jQuery | Find emails |
| pabsttheatergroup.com | #488,505 | Fastly, Font Awesome, Google Ads Conversion + 9 more | Find emails |
| kogt.com | #488,620 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| memic.com | #488,767 | Adobe Fonts (Typekit), Cloudflare, DigiCert + 5 more | Find emails |
| pure-cottages.jp | #488,775 | DigiCert, Google Tag Manager, Google Workspace + 4 more | Find emails |
| apgroup.com | #488,783 | Amazon Route 53, Google Tag Manager, PerimeterX (HUMAN) + 3 more | Find emails |
| bundesweit-gegen-gluecksspielsucht.de | #488,850 | Let's Encrypt, TYPO3, jQuery | Find emails |
| scvotes.gov | #488,967 | Amazon (ACM), Amazon Route 53, Google Analytics + 10 more | Find emails |
| brazilian-transsexuals.com | #488,999 | ASP.NET, Bootstrap, Font Awesome + 9 more | Find emails |
| pdesas.org | #489,202 | Adobe Fonts (Typekit), Font Awesome, Google 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 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 →