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 |
|---|---|---|---|
| pstnet.com | #521,544 | Amazon Route 53, Font Awesome, Google AdSense + 8 more | Find emails |
| ect.nl | #521,602 | Drupal, Google Analytics, Google Tag Manager + 2 more | Find emails |
| freifunk-westerwald.de | #521,619 | Let's Encrypt, Nginx, Vimeo + 1 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| jobteck.com.sg | #521,673 | Font Awesome, Google Fonts, Let's Encrypt + 5 more | Find emails |
| afternoontea.co.uk | #521,798 | Adobe Fonts (Typekit), Google Analytics, Google Tag Manager + 6 more | Find emails |
| bgplay.us | #521,835 | Bootstrap, Chaport, Cloudflare + 11 more | Find emails |
| dataoppdrag.no | #522,159 | Fancybox, Google Analytics, Let's Encrypt + 5 more | Find emails |
| mkrada.gov.ua | #522,320 | Cloudflare, Cloudflare edge/CDN, Fancybox + 6 more | Find emails |
| clover.co.jp | #522,353 | Font Awesome, Google Fonts, Google Tag Manager + 8 more | Find emails |
| anonsys.net | #522,381 | Bootstrap, Fancybox, Font Awesome + 3 more | Find emails |
| jbswear.com.au | #522,512 | ASP.NET, Font Awesome, Google Analytics + 6 more | Find emails |
| booklista.co.jp | #522,600 | Amazon (ACM), Amazon Route 53, GSAP + 9 more | Find emails |
| utilitaarenabham.co.uk | #522,654 | Cloudflare, Fastly, Font Awesome + 5 more | Find emails |
| dobridelovi.com | #522,660 | Cloudflare, Cloudflare edge/CDN, Fancybox + 7 more | Find emails |
| schoolhouseteachers.com | #522,743 | Bootstrap, Font Awesome, Google Fonts + 8 more | Find emails |
| pass4leader.com | #522,796 | Bootstrap, Chart.js, Cloudflare + 9 more | Find emails |
| metalfabme.com | #522,846 | Bootstrap, Font Awesome, Google Tag Manager + 6 more | Find emails |
| ivymobilegame.com | #522,847 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| newbloommag.net | #522,871 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 3 more | Find emails |
| arpalumbria.it | #522,900 | Bootstrap, Drupal, Google Fonts + 3 more | Find emails |
| puretimewatch88.io | #523,013 | Google Fonts, jQuery, Magento | Find emails |
| 2020-directory.com | #523,026 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| portmobility.it | #523,297 | Bootstrap, Cookiebot, Drupal + 10 more | Find emails |
| tottorihanakairou.or.jp | #523,348 | Google Analytics, Google Fonts, Google Tag Manager + 2 more | Find emails |
| tools-directory.com | #523,364 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 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 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 →