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 |
|---|---|---|---|
| cautjumatatea.com | #768,532 | Apache, Font Awesome, Google Tag Manager + 4 more | Find emails |
| celibatairesdisponibles.com | #768,831 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| celibatairesprochedetoi.com | #768,832 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| ceskyflirt.com | #769,096 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| chatdaseducao.com | #769,371 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| chatpasional.com | #769,389 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| cheekylocals.com | #769,465 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| cheflirt.com | #769,476 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| chicasdemiregion.com | #769,581 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| chicaslocales.mx | #769,583 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| closebyflirt.com | #770,657 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| clubedeflerte.com | #770,771 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| clubedesolteiras.com | #770,772 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| clubnuoveidee.it | #770,799 | Adobe Fonts (Typekit), Bootstrap, Let's Encrypt + 7 more | Find emails |
| clubromances.com | #770,808 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| cmovilgyp.com | #770,853 | ASP.NET, Bootstrap, Chart.js + 7 more | Find emails |
| conexionescercanas.com | #771,563 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| conqueteavoisinante.com | #771,633 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| contactetflirt.com | #771,715 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| contactoysexo.com | #771,718 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| contatosproximos.com | #771,732 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| contattoerotico.com | #771,734 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| contattolocale.com | #771,735 | Apache, Font Awesome, Google Fonts + 3 more | Find emails |
| coolbrands.pe | #771,840 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 12 more | Find emails |
| coqueteosproximos.com | #771,916 | Apache, Font Awesome, Google Tag Manager + 3 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 →