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 |
|---|---|---|---|
| transagostosa.com.br | #592,436 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| vicinipiccanti.com | #592,515 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| wildesabenteuer.com | #592,566 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| wottagirl.com | #592,575 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 9 more | Find emails |
| forestfieldfashion.com | #592,905 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 9 more | Find emails |
| katvr.com | #593,277 | Alibaba Cloud DNS, Bootstrap, Cloudflare edge/CDN + 12 more | Find emails |
| nettorama.nl | #593,574 | Font Awesome, Google Tag Manager, Microsoft 365 + 5 more | Find emails |
| ginatricot.is | #594,685 | Cloudflare edge/CDN, Google Hosted Libraries, Let's Encrypt + 7 more | Find emails |
| bajiosunglasses.com | #594,861 | Attentive, Cloudflare edge/CDN, Google Fonts + 10 more | Find emails |
| aplug.pl | #595,522 | Cloudflare edge/CDN, DigitalOcean Spaces, Google Tag Manager + 9 more | Find emails |
| frecherchat.com | #596,063 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| homify.sa | #597,283 | Amazon Route 53, Bunny CDN, BunnyCDN + 10 more | Find emails |
| amkette.com | #598,809 | Cloudflare edge/CDN, GoAffPro, Google Tag Manager + 9 more | Find emails |
| celovendo.com | #599,194 | Bootstrap, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| nicolaus.it | #601,149 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 7 more | Find emails |
| passionatechat.com | #601,329 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| samawa.ae | #601,726 | Cloudflare edge/CDN, Font Awesome, Google Fonts + 12 more | Find emails |
| worldoftriumph.com | #602,531 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 7 more | Find emails |
| downtofab.com | #604,736 | Cloudflare edge/CDN, Font Awesome, Let's Encrypt + 9 more | Find emails |
| shoptupperware.in | #605,748 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 15 more | Find emails |
| thefitville.de | #606,323 | Cloudflare edge/CDN, Font Awesome, Google Ads Conversion + 15 more | Find emails |
| asfo.store | #606,568 | Cloudflare edge/CDN, Google Maps, Let's Encrypt + 7 more | Find emails |
| iqunix.com | #607,420 | Alibaba Cloud DNS, Cloudflare edge/CDN, Fancybox + 9 more | Find emails |
| sakurafilter.com | #607,870 | Google Analytics, Google Hosted Libraries, Google Maps + 9 more | Find emails |
| loewenanteil.com | #608,334 | Cloudflare edge/CDN, Convert, Klaviyo + 6 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 →