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 |
|---|---|---|---|
| rdg.ac.uk | #86,736 | Google Tag Manager, Microsoft 365, Sectigo + 3 more | Find emails |
| rosariogarage.com | #86,758 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| obesityhelp.com | #86,809 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 7 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| kuranvemeali.com | #86,824 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| hcpc-uk.org | #86,973 | ASP.NET, Cloudflare edge/CDN, DigiCert + 6 more | Find emails |
| nrpa.org | #87,032 | ASP.NET, Adobe Fonts (Typekit), Cloudflare + 17 more | Find emails |
| clojure.org | #87,164 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| wesnoth.org | #87,183 | Let's Encrypt, YouTube, jQuery | Find emails |
| opry.com | #87,238 | Cloudflare, Fastly, Font Awesome + 6 more | Find emails |
| campaignlive.com | #87,347 | ASP.NET, Cloudflare, Cloudflare edge/CDN + 4 more | Find emails |
| beautylish.com | #87,352 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 3 more | Find emails |
| merateonline.it | #87,355 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| spirehealthcare.com | #87,450 | Font Awesome, Google Analytics, Google Fonts + 9 more | Find emails |
| relatos-eroticos-club-x.com | #87,463 | ASP.NET, Let's Encrypt | Find emails |
| jleague-ticket.jp | #87,551 | Amazon CloudFront, Amazon Route 53, DigiCert + 2 more | Find emails |
| bvp.com | #87,630 | Adobe Fonts (Typekit), Fathom, Let's Encrypt + 7 more | Find emails |
| mackinaw-city.com | #87,638 | Adobe Fonts (Typekit), Google Ads Conversion, Google Analytics + 6 more | Find emails |
| okov.rs | #87,674 | Cloudflare, DigiCert, Google Tag Manager + 1 more | Find emails |
| laca.org | #87,688 | ASP.NET, Bootstrap, Cloudflare edge/CDN + 8 more | Find emails |
| lafinancepourtous.com | #87,851 | Bootstrap, Google Analytics, Google Tag Manager + 6 more | Find emails |
| f150forum.com | #87,993 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 7 more | Find emails |
| xn--l3cl2br0bq7evc0c.com | #88,144 | Bulma, Cloudflare, Cloudflare edge/CDN + 4 more | Find emails |
| srvtrck.com | #88,145 | Amazon Route 53, Bootstrap, Cookiebot + 7 more | Find emails |
| wordart.com | #88,154 | Bootstrap, Font Awesome, Google Analytics + 6 more | Find emails |
| conetix.com | #88,350 | Adobe Fonts (Typekit), Bootstrap, Fancybox + 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 →