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 |
|---|---|---|---|
| cune.edu | #153,674 | Apache, Concrete CMS, Google Tag Manager + 3 more | Find emails |
| directaxis.co.za | #154,471 | ASP.NET, Google Fonts, Google Maps + 6 more | Find emails |
| po.co | #154,943 | DigiCert, Google Analytics, Google Tag Manager + 4 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| chartindustries.com |
| #155,204 |
| ASP.NET, Azure Front Door, Bootstrap + 14 more |
| Find emails |
| sensebank.com.ua | #156,489 | Imperva, Microsoft 365, Nginx + 3 more | Find emails |
| discordmerch.com | #158,610 | Cloudflare, Cloudflare edge/CDN, Let's Encrypt + 4 more | Find emails |
| off-road.com | #158,738 | Amazon Advertising, Apache, Fastly + 17 more | Find emails |
| ndonline.com | #160,668 | Cloudflare edge/CDN, Google Analytics, Google Tag Manager + 10 more | Find emails |
| quicksell.co | #161,747 | Amazon (ACM), Amazon Route 53, Google Analytics + 6 more | Find emails |
| lankapropertyweb.com | #162,856 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 16 more | Find emails |
| webcamera.pl | #162,980 | DigiCert, DoubleClick (Google Ads), Font Awesome + 7 more | Find emails |
| barefootcontessa.com | #163,728 | Google Analytics, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| doubletick.io | #164,811 | Amazon (ACM), Amazon Route 53, Calendly + 19 more | Find emails |
| juneoven.com | #166,371 | AOS, Amazon Route 53, Awin + 16 more | Find emails |
| tabletopia.com | #166,685 | Amazon Route 53, Google Fonts, Google Tag Manager + 4 more | Find emails |
| yampi.com.br | #168,783 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| beej.us | #171,778 | Apache, Google Fonts, Let's Encrypt + 2 more | Find emails |
| bureauengros.com | #172,452 | Akamai Edge DNS, Bugsnag, Cloudflare edge/CDN + 10 more | Find emails |
| cheshirewestandchester.gov.uk | #174,049 | Azure DNS, Civic Cookie Control, Contensis + 7 more | Find emails |
| magnoliabakery.com | #174,505 | Cloudflare edge/CDN, Google Cloud DNS, Google Optimize + 3 more | Find emails |
| kardex.com | #176,093 | Brandfolder, Cloudflare Bot Management, Cloudflare edge/CDN + 12 more | Find emails |
| smappliance.com | #176,814 | Bugsnag, Cloudflare edge/CDN, DoubleClick (Google Ads) + 25 more | Find emails |
| host.it | #177,154 | Bootstrap, Font Awesome, Google Fonts + 7 more | Find emails |
| valuelabs.com | #177,609 | Ahrefs Analytics, All in One SEO, Bootstrap + 14 more | Find emails |
| sjf.edu | #178,039 | AddThis, Amazon (ACM), Apache + 5 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 →