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 |
|---|---|---|---|
| cifamerica.com | #861,073 | DoubleClick (Google Ads), Fastly, Google Publisher Tag + 4 more | Find emails |
| ecoplatform.tech | #861,157 | Cloudflare, Let's Encrypt, Nuxt.js + 1 more | Find emails |
| throwbackvault.com | #861,532 | Cloudflare edge/CDN, Google Hosted Libraries, Google Optimize + 11 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| oakhall.com | #862,206 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 9 more | Find emails |
| adultvibetoys.com | #862,323 | Cloudflare edge/CDN, Google Maps, Google Tag Manager + 10 more | Find emails |
| tal-software.com | #866,162 | Bluesky, Bootstrap, Cloudflare + 14 more | Find emails |
| illanificio.com | #867,174 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| iqlandia.cz | #868,309 | Adobe Fonts (Typekit), Apache, Concrete CMS + 7 more | Find emails |
| groby.hu | #868,543 | Azure DNS, Cookiebot, Google Fonts + 6 more | Find emails |
| craftreat.com | #869,815 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 8 more | Find emails |
| replay-golf.co.uk | #871,625 | Cloudflare edge/CDN, Google Maps, Google Workspace + 11 more | Find emails |
| commentisfree.co.uk | #876,230 | DoubleClick (Google Ads), Fastly, Google Publisher Tag + 4 more | Find emails |
| hausaerztlichepraxis.digital | #876,448 | Let's Encrypt, Nginx, PHP + 4 more | Find emails |
| aljaira.com | #877,605 | AddThis, Bootstrap, Cloudflare + 7 more | Find emails |
| oursecretflirts.com | #878,102 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| booksunlimited.co.uk | #880,113 | DoubleClick (Google Ads), Fastly, Google Publisher Tag + 4 more | Find emails |
| bicyclesuperstore.com.au | #881,234 | Cloudflare edge/CDN, Google Tag Manager, Klaviyo + 10 more | Find emails |
| americanflings.com | #884,161 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| ataktakoritsia.com | #884,560 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| aussieflingfinder.com | #884,620 | Apache, Font Awesome, Google Fonts + 3 more | Find emails |
| casildafinatmc.com | #886,086 | AOS, Cloudflare edge/CDN, Hotjar + 9 more | Find emails |
| celibatairedacote.com | #886,162 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| clubuldechat.com | #886,554 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| contesthub.my | #886,712 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| damasproximas.com | #887,052 | 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 →