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 |
|---|---|---|---|
| karrierestart.no | #498,274 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 4 more | Find emails |
| neural.it | #498,372 | Let's Encrypt, WordPress, jQuery | Find emails |
| vlebooks.com | #498,385 | Bootstrap, Font Awesome, Google Analytics + 4 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| stellarwagerplus.com |
| #498,475 |
| Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more |
| Find emails |
| jizzy.org | #498,531 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| i-ski.co.uk | #498,597 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| e-hapi.com | #498,859 | Akamai edge/CDN, Akamai mPulse, DigiCert + 9 more | Find emails |
| iqualify.com | #498,979 | Font Awesome, Google Fonts, Google Tag Manager + 6 more | Find emails |
| southernenvironment.org | #499,097 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| lecrat.fr | #499,104 | Disqus, Font Awesome, Google Fonts + 5 more | Find emails |
| corvetteforums.com | #499,106 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 7 more | Find emails |
| nannuka.com | #499,150 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| oha.org | #499,151 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 8 more | Find emails |
| westgatehosting.com | #499,170 | Google Fonts, Sectigo, WordPress + 2 more | Find emails |
| webnamedirectory.com | #499,247 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| addisontx.gov | #499,280 | Akamai mPulse, Google Fonts, Let's Encrypt + 1 more | Find emails |
| gen-directory.com | #499,290 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| vietbizdirectory.com | #499,343 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| bookingbooster.it | #499,365 | Azure DNS, Bootstrap, Fancybox + 9 more | Find emails |
| tps.org.au | #499,398 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| ca4la.com | #499,450 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 7 more | Find emails |
| lickingcounty.gov | #499,518 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 9 more | Find emails |
| bisebwp.pk | #499,522 | ASP.NET, Bootstrap, Font Awesome + 7 more | Find emails |
| dbz.de | #499,720 | Fancybox, Font Awesome, Friendly Captcha + 8 more | Find emails |
| taptouche.com | #499,731 | Amazon Route 53, Matomo, Microsoft 365 + 3 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 →