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 |
|---|---|---|---|
| adu.ch | #757,099 | Fancybox, Google Maps, Google Tag Manager + 7 more | Find emails |
| affarisessuali.com | #757,229 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| agendasensuale.com | #757,367 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| aishitoto.co.jp | #757,770 | A8.net, ASP.NET, Amazon (ACM) + 8 more | Find emails |
| akarokvalakit.com | #757,895 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| amalexp.com | #758,726 | ASP.NET, Azure API Management, Bootstrap + 11 more | Find emails |
| amantesegreto.com | #758,748 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| amartolipoli.com | #758,764 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| americanflirting.com | #758,878 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| aproapetine.com | #760,071 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| aqsicurezzalotto1pal.it | #760,128 | Amazon (ACM), Amazon Route 53, Apache + 4 more | Find emails |
| ataktoflirt.com | #761,154 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| atpformosa.gob.ar | #761,307 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| attrazionesegreta.it | #761,342 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| aussiematchzone.com | #761,494 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| avventurefocose.com | #761,909 | Apache, Font Awesome, Google Fonts + 3 more | Find emails |
| avventurepiccanti.com | #761,910 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| b-ris.shop | #762,139 | ASP.NET, CDN Fonts, Google Hosted Libraries + 7 more | Find emails |
| blizkyflirt.com | #765,339 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| bulbsdirect.co.nz | #766,767 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 12 more | Find emails |
| bursztynhome.com | #766,879 | Cloudflare edge/CDN, Klaviyo, Let's Encrypt + 6 more | Find emails |
| canadiancrushes.com | #767,713 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| carhartt-wip.com.my | #768,053 | Cloudflare edge/CDN, Google Tag Manager, Klaviyo + 7 more | Find emails |
| carismatix.it | #768,069 | Cloudflare edge/CDN, Doofinder, Google Fonts + 7 more | Find emails |
| cautdistractie.com | #768,531 | Apache, Font Awesome, Google Tag Manager + 4 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 →