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 |
|---|---|---|---|
| wetronic.nl | #662,171 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 7 more | Find emails |
| overlander.com.hk | #662,908 | Amazon CloudFront, Apache, Bootstrap + 17 more | Find emails |
| mehralsnurnachbarn.com | #663,276 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| excellencedriving.com | #666,495 | Cloudflare, Cloudflare edge/CDN, Freshchat + 13 more | Find emails |
| verboteneflirts.com | #667,755 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| petmart.ro | #670,254 | Cookie-Script, Font Awesome, Google Analytics + 10 more | Find emails |
| unserflirt.com | #671,118 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| localvibesconnection.com | #673,240 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| dailyblooms.com.au | #675,088 | Cloudflare, Cloudflare edge/CDN, CrazyEgg + 10 more | Find emails |
| townandcountrymarkets.com | #678,691 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 12 more | Find emails |
| harpercollins.com.br | #679,058 | Axios, Bootstrap, Cloudflare edge/CDN + 14 more | Find emails |
| bohojeans.com | #680,622 | Cloudflare edge/CDN, Let's Encrypt, Pinterest Tag + 6 more | Find emails |
| drawaria.online | #685,367 | Bootstrap, Cloudflare, DoubleClick (Google Ads) + 12 more | Find emails |
| developmentgateway.org | #685,542 | Amazon Route 53, Breezy HR, Fathom + 10 more | Find emails |
| santafequilting.com | #686,306 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 6 more | Find emails |
| laytonsportscards.com | #686,313 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 8 more | Find emails |
| lessoeurs.be | #687,116 | Bootstrap, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| casacerta.pt | #687,586 | Bootstrap, Clicky, Cloudflare + 14 more | Find emails |
| quickparts.com | #688,489 | Cloudflare, Google Fonts, Google Hosted Libraries + 12 more | Find emails |
| mist-train-girls.com | #688,822 | Azure DNS, DigiCert, Google Analytics + 5 more | Find emails |
| greenbelly.co | #690,579 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 14 more | Find emails |
| citysweeties.com | #690,805 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| thefrenchpharmacy.co | #693,297 | Cloudflare edge/CDN, Google Cloud DNS, Hotjar + 10 more | Find emails |
| secretloversnearby.com | #693,657 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| enativ.com | #696,910 | FullStory, Google Analytics, Google Cloud DNS + 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 →