JavaScript Library & Framework
1,063 of the 1,000,000 top sites in our Tranco top-1M census run Polyfill.io (0.1%). A JavaScript polyfill service that served browser-compatibility shims to older or unsupported browsers from a CDN. Detection is homepage-level HTML/header fingerprinting, so a site can run Polyfill.io on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | theguardian.com | #192 (Tranco) | Find emails |
| 2 | guardian.co.uk | #2,366 (Tranco) | Find emails |
| 3 | thehindu.com | #2,899 (Tranco) | Find emails |
| 4 | bancointer.com.br |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| homify.pk | #952,951 | Amazon Route 53, Bunny CDN, BunnyCDN + 9 more | Find emails |
| bookends.ae | #953,765 | Cloudflare, Cloudflare edge/CDN, Gravatar + 8 more | Find emails |
| mycar.mobi | #954,976 | Bootstrap, Google Fonts, Iconscout + 7 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| ashes.co.uk |
| #955,930 |
| DoubleClick (Google Ads), Fastly, Google Publisher Tag + 4 more |
| Find emails |
| assignmentgeek.com | #958,193 | Bootstrap, Cloudflare Turnstile, DMCA.com Protection + 12 more | Find emails |
| groupebbh.com | #958,838 | Amazon Route 53, Font Awesome, Google Fonts + 11 more | Find emails |
| villanoailles.com | #960,906 | Apache, Google Analytics, Google Tag Manager + 3 more | Find emails |
| homify.jp | #961,474 | Amazon Route 53, Bunny CDN, BunnyCDN + 10 more | Find emails |
| wanderbeauty.com | #962,562 | AB Tasty, Adobe Fonts (Typekit), Attentive + 23 more | Find emails |
| connectec.uk | #963,694 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 2 more | Find emails |
| icmat.es | #963,933 | Divi, Google Analytics, Google Tag Manager + 4 more | Find emails |
| fxrracing.com | #965,827 | Adobe Fonts (Typekit), Cloudflare edge/CDN, Datadog + 15 more | Find emails |
| asep.org | #967,986 | Bootstrap, Concrete CMS, Font Awesome + 12 more | Find emails |
| newyorkconvention.org | #968,369 | Font Awesome, Google Tag Manager, Nginx + 4 more | Find emails |
| echo-brain.com | #969,106 | Django, Google Analytics, Google Tag Manager + 9 more | Find emails |
| chemie-schule.de | #970,381 | Apache, Bootstrap, ConsentMo + 11 more | Find emails |
| pricebusters.com | #970,408 | Cloudflare edge/CDN, Hotjar, Let's Encrypt + 7 more | Find emails |
| bajwa-shop.com | #973,248 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 12 more | Find emails |
| kat-vr.com | #974,004 | Bootstrap, Cloudflare edge/CDN, ConsentMo + 11 more | Find emails |
| ajd.czest.pl | #976,968 | Apache, Bootstrap, Fancybox + 7 more | Find emails |
| blackstonelibrary.com | #977,033 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 10 more | Find emails |
| cafegratitude.com | #977,744 | Amazon Route 53, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| warealtor.org | #980,119 | ASP.NET, Azure API Management, Bootstrap + 8 more | Find emails |
| yvesrocher.az | #981,970 | Cloudflare edge/CDN, Google Tag Manager, Judge.me + 8 more | Find emails |
| apolisglobal.com | #982,980 | Attentive, Cloudflare edge/CDN, Cookiebot + 13 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →