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 |
|---|---|---|---|
| flirtzhoda.com | #212,019 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| gaming4ks.com | #212,123 | Bootstrap, Google Cloud, Google Fonts + 3 more | Find emails |
| localizadordechicas.com | #212,923 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| pecadoetentacao.com | #213,646 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| portaldelligue.com | #213,766 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| riracle-pos.jp | #214,037 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| tajneflirtuje.com | #214,599 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| tajnesny.com | #214,600 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| trouveuncrush.com | #214,775 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| vecinadelanga.com | #214,914 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| vecinasmaduritas.com | #214,915 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| vecinaspasionales.mx | #214,916 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| znajdzsingielke.com | #215,254 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| atlanticunionbank.com | #215,704 | ASP.NET, Azure API Management, Azure Front Door + 8 more | Find emails |
| roberts-and-co.com | #216,538 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 7 more | Find emails |
| gama.globo | #217,999 | Google Analytics, Google Tag Manager, Let's Encrypt + 1 more | Find emails |
| crushnearby.com | #219,354 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| marathon.tokyo | #219,928 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 6 more | Find emails |
| rebeccaatwood.com | #222,067 | Cloudflare edge/CDN, FullStory, Google Hosted Libraries + 11 more | Find emails |
| uncsa.edu | #222,189 | Adobe Fonts (Typekit), Font Awesome, Google Analytics + 11 more | Find emails |
| iafc.org | #223,039 | ASP.NET, AdZerk (Kevel), Adobe Experience Cloud (Launch) + 17 more | Find emails |
| accorarena.com | #223,048 | Amazon (ACM), Amazon CloudFront, Google Fonts + 2 more | Find emails |
| gthic.com | #223,574 | Attentive, Cloudflare edge/CDN, Google Tag Manager + 11 more | Find emails |
| homify.com.eg | #224,028 | Amazon Route 53, Bunny CDN, BunnyCDN + 10 more | Find emails |
| lesindesradios.fr | #224,252 | Cloudflare, Google Analytics, Google Tag Manager + 5 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 →