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 |
|---|---|---|---|
| femmetorrideacote.com | #781,456 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| findoutdoctor.com | #781,954 | Blogger, Bootstrap, Google Cloud + 3 more | Find emails |
| flerteagora.com.br | #782,306 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| flertemaduro.com.br | #782,307 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flingunited.co.uk | #782,347 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirtarecondonne.com | #782,354 | Apache, Font Awesome, Google Fonts + 3 more | Find emails |
| flirteavecmoi.com | #782,357 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| flirteazacumine.com | #782,358 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| flirteninbelgie.be | #782,359 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| flirtigagrannar.com | #782,360 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirtingmatch.com | #782,361 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| flirtingneighborsusa.com | #782,362 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirtingwithmatures.com | #782,363 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirtlocali.com | #782,367 | Apache, Font Awesome, Google Fonts + 3 more | Find emails |
| flirtmatch.se | #782,368 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| flirtticlubi.com | #782,372 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirttisuomi.com | #782,373 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirturilocale.com | #782,374 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| flirtvicini.com | #782,375 | Apache, Font Awesome, Google Fonts + 3 more | Find emails |
| flirtyaustralia.com | #782,378 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| forrokalandok.com | #782,862 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| frekkenaboer.com | #783,225 | Apache, Font Awesome, Google Tag Manager + 4 more | Find emails |
| frekkis.com | #783,226 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| gavsa.com.mx | #784,537 | AOS, Bootstrap, Google Analytics + 8 more | Find emails |
| geheimeaffaeren.com | #784,744 | Apache, Font Awesome, Google Fonts + 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 →