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 |
|---|---|---|---|
| casaandbeyond.com | #567,417 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 13 more | Find emails |
| havashealth.com | #568,951 | AOS, Amazon (ACM), Apache + 11 more | Find emails |
| pearsonschoolsandfecolleges.co.uk | #569,187 | Akamai edge/CDN, Akamai mPulse, Contensis + 5 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| pulseofpotential.com | #569,985 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 12 more | Find emails |
| tacticalgearjunkie.com | #570,606 | Bootstrap, Cloudflare edge/CDN, Google Hosted Libraries + 16 more | Find emails |
| electricfireplacesdirect.com | #571,055 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| edmarshall.com | #571,401 | Cloudflare, Cloudflare edge/CDN, Google Hosted Libraries + 9 more | Find emails |
| cottonsjaipur.com | #571,965 | Cloudflare edge/CDN, Google Cloud DNS, Google Tag Manager + 8 more | Find emails |
| goodseeco.com | #572,201 | Cloudflare edge/CDN, Font Awesome, Google Ads Conversion + 14 more | Find emails |
| ichbindein.com | #573,029 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| biblesearch.me | #574,948 | ASP.NET, Bootstrap, Font Awesome + 7 more | Find emails |
| plazmo.com | #575,043 | Cloudflare edge/CDN, Judge.me, Let's Encrypt + 7 more | Find emails |
| santosorganics.com.au | #576,400 | Afterpay, Cloudflare edge/CDN, Google Analytics + 14 more | Find emails |
| smartprintsink.com | #578,466 | Cloudflare edge/CDN, Google Analytics, Google Hosted Libraries + 12 more | Find emails |
| revelnail.com | #580,119 | Cloudflare edge/CDN, Convert, GoAffPro + 25 more | Find emails |
| fifthseasongardening.com | #582,817 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 20 more | Find emails |
| howden.com | #582,858 | ASP.NET, Azure Front Door, Bootstrap + 12 more | Find emails |
| wolverinesports.com | #583,438 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 11 more | Find emails |
| fittaste.com | #584,321 | Amazon Route 53, Bugsnag, Cloudflare edge/CDN + 15 more | Find emails |
| grounds-fw.jp | #584,442 | Cloudflare edge/CDN, Global-e, Google Cloud DNS + 7 more | Find emails |
| skinsociety.me | #589,490 | Cloudflare edge/CDN, Fancybox, Font Awesome + 21 more | Find emails |
| afir.ro | #590,059 | Azure API Management, Azure Front Door, Bootstrap + 12 more | Find emails |
| astra-otoparts.com | #590,971 | ASP.NET, Bootstrap, Font Awesome + 15 more | Find emails |
| flirtdusoir.com | #591,362 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| holkyodvedle.com | #591,507 | Apache, Font Awesome, Google Fonts + 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 →