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 |
|---|---|---|---|
| koeniggalerie.com | #697,555 | Cloudflare edge/CDN, ConsentMo, DoubleClick (Google Ads) + 11 more | Find emails |
| direktflirten.com | #698,705 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| loganspianos.com.au | #699,916 | Bootstrap, Cloudflare edge/CDN, Google Tag Manager + 9 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| youronlinematches.com | #700,668 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| katyayanikrishidirect.com | #702,978 | Axios, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| baropharm.com | #703,300 | Amazon (ACM), Amazon Route 53, ClickTale (Contentsquare) + 7 more | Find emails |
| guardianunlimited.co.uk | #705,137 | DoubleClick (Google Ads), Fastly, Google Publisher Tag + 4 more | Find emails |
| biotechusa.sk | #706,678 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 13 more | Find emails |
| sanfrancescopatronoditalia.it | #706,715 | Adobe Fonts (Typekit), Apache, Civic Cookie Control + 9 more | Find emails |
| gpc.pe | #707,123 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 9 more | Find emails |
| openbox.ca | #707,365 | Cloudflare edge/CDN, Google Analytics, Google Hosted Libraries + 9 more | Find emails |
| loveeto.com | #708,167 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 1 more | Find emails |
| obrazyvaukci.cz | #708,288 | ASP.NET, Adform, Azure API Management + 8 more | Find emails |
| wpl-rc.com | #708,644 | Cloudflare edge/CDN, GoAffPro, Klaviyo + 10 more | Find emails |
| atlantico.ao | #708,749 | Bootstrap, Cloudflare, DigiCert + 7 more | Find emails |
| tigstore.com.br | #709,347 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 16 more | Find emails |
| walkermovements.com | #709,393 | Adobe Fonts, Adobe Fonts (Typekit), Cloudflare + 12 more | Find emails |
| definitelyscience.com | #709,974 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| jacstores.co.uk | #710,978 | Cloudflare edge/CDN, Google Maps, Klaviyo + 5 more | Find emails |
| sac.or.th | #711,200 | AOS, Bootstrap, Google Analytics + 8 more | Find emails |
| bob.com | #711,616 | CNZZ, Sectigo | Find emails |
| hub.com.pk | #711,966 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 12 more | Find emails |
| bodenheizung-24.de | #712,662 | Doofinder, Google Ads Conversion, Google Analytics + 13 more | Find emails |
| stahlkitchens.com | #713,648 | Cloudflare edge/CDN, Font Awesome, GoAffPro + 13 more | Find emails |
| eyepegasus.com | #714,974 | Amazon Route 53, D3.js, Google Cloud + 8 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 →