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 |
|---|---|---|---|
| books4people.co.uk | #715,104 | Bootstrap, Cloudflare edge/CDN, DigitalOcean Spaces + 20 more | Find emails |
| longstreth.com | #716,076 | Cloudflare, Cloudflare edge/CDN, ConsentMo + 9 more | Find emails |
| gatorz.com | #716,567 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 17 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| beveco.nl | #716,933 | Adobe Fonts (Typekit), Apache, Cookiebot + 4 more | Find emails |
| harekrishnamart.com | #717,075 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 7 more | Find emails |
| bvbalyans.tj | #717,161 | Bootstrap, Cloudflare, Let's Encrypt + 4 more | Find emails |
| spf.com.tw | #717,657 | ASP.NET, Font Awesome, Google Analytics + 7 more | Find emails |
| casaandbeyond.com.au | #718,270 | Cloudflare edge/CDN, Intelligems, Klaviyo + 10 more | Find emails |
| watchaser.com | #718,474 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 10 more | Find emails |
| lemlem.com | #718,492 | Amazon Advertising, Cloudflare edge/CDN, Global-e + 13 more | Find emails |
| watchesqatar.com | #719,151 | Cloudflare edge/CDN, Google Hosted Libraries, Google Maps + 6 more | Find emails |
| nekodora.jp | #720,323 | Amazon Route 53, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| shascollections.com | #720,550 | Cloudflare edge/CDN, GoKwik, Google Analytics + 8 more | Find emails |
| uedakanamono.co.jp | #720,722 | Google Analytics, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| saint-charles.eu | #720,965 | Cloudflare edge/CDN, ConsentMo, DoubleClick (Google Ads) + 16 more | Find emails |
| baboooms.com | #722,973 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| echelontravel.co.uk | #723,184 | Google Maps, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| luffytoys.cl | #726,544 | Cloudflare, Cloudflare edge/CDN, Fancybox + 11 more | Find emails |
| kinto-usa.com | #727,946 | ClickTale (Contentsquare), Cloudflare edge/CDN, Google Hosted Libraries + 11 more | Find emails |
| guardiannews.com | #729,414 | DoubleClick (Google Ads), Fastly, Google Publisher Tag + 4 more | Find emails |
| andromedainsights.com | #730,211 | ChatGPT Ads Pixel, Cloudflare edge/CDN, Font Awesome + 14 more | Find emails |
| korenpub.co.il | #732,110 | Cloudflare edge/CDN, GoAffPro, Google Ads Conversion + 15 more | Find emails |
| sc.ac.kr | #733,335 | Bootstrap, Daum, DigiCert + 9 more | Find emails |
| magculture.com | #734,051 | Cloudflare edge/CDN, Let's Encrypt, Recharge + 5 more | Find emails |
| twomance.com | #735,812 | 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 →