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 |
|---|---|---|---|
| ncirs.org.au | #573,941 | Cloudflare, ConsentMo, DigiCert + 8 more | Find emails |
| instituteofcoaching.org | #573,984 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| certstaff.com | #574,080 | Bootstrap, ChatGPT Ads Pixel, Cloudflare + 10 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| leccoonline.com | #574,134 | Bootstrap, Font Awesome, Google AdSense + 9 more | Find emails |
| elwico.pl | #574,139 | Bootstrap, Google Fonts, Owl Carousel + 3 more | Find emails |
| sibyl.com | #574,165 | Blogger, Google Analytics, Google Fonts + 7 more | Find emails |
| slovnaft.sk | #574,212 | Azure DNS, Bootstrap, Google Maps + 3 more | Find emails |
| tf-robots.nl | #574,362 | Cloudflare, Cloudflare edge/CDN, Fancybox + 8 more | Find emails |
| deeranddeerhunting.com | #574,451 | Bootstrap, Font Awesome, Google Analytics + 10 more | Find emails |
| moh.go.tz | #574,503 | Bootstrap, DigiCert, Font Awesome + 2 more | Find emails |
| thebarn.net.au | #574,534 | ASP.NET, Bootstrap, Cloudflare + 10 more | Find emails |
| prep4pass.com | #574,626 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| iussp.org | #574,628 | Bootstrap, Drupal, Font Awesome + 9 more | Find emails |
| picarro.com | #574,629 | AOS, Chart.js, Drupal + 14 more | Find emails |
| bmega.net | #574,639 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| serutg279.xyz | #574,724 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 6 more | Find emails |
| patnawomenscollege.in | #574,828 | Bootstrap, Font Awesome, Google Fonts + 6 more | Find emails |
| chemwhat.com | #574,834 | Bootstrap, Cloudflare Bot Management, Cloudflare Turnstile + 7 more | Find emails |
| stagobel.be | #574,880 | Cloudflare, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| junglelodges.com | #574,924 | Bootstrap, Cloudflare, Fancybox + 11 more | Find emails |
| fuertehoteles.com | #574,951 | Cloudflare edge/CDN, Cookiebot, Font Awesome + 6 more | Find emails |
| belbin.com | #574,967 | ASP.NET, Bootstrap, Cloudflare + 12 more | Find emails |
| chq-airport.gr | #574,997 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 4 more | Find emails |
| policinginsight.com | #575,001 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| locknlock.com | #575,012 | Amazon Route 53, Sectigo | 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 →