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 |
|---|---|---|---|
| actorsequity.org | #224,530 | ASP.NET, Action Network, Adobe Fonts (Typekit) + 8 more | Find emails |
| alumni.net | #224,904 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 11 more | Find emails |
| sofarcloud.com | #226,390 | Alibaba Cloud DNS, Amap (AutoNavi), DigiCert + 2 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| movieposters.com | #228,324 | Adobe Fonts (Typekit), Chatra, Cloudflare + 10 more | Find emails |
| avventureinzona.com | #228,852 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| chicasdetuzona.com | #229,114 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| crushwithaneighbor.com | #229,181 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| passionaproximite.com | #230,401 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| rustorange.com | #230,652 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 13 more | Find emails |
| senzaregole.com | #230,707 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| skanfil.no | #230,746 | ASP.NET, Azure API Management, DigiCert + 4 more | Find emails |
| subhvastra.in | #230,828 | Cloudflare edge/CDN, Font Awesome, Google AdSense + 14 more | Find emails |
| titkosromanc.com | #230,926 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| vicinipassionali.com | #231,089 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| homify.de | #232,809 | Amazon Route 53, Bunny CDN, BunnyCDN + 9 more | Find emails |
| stellarfixtures.com | #238,479 | Cloudflare edge/CDN, Google Ads Conversion, Google Analytics + 10 more | Find emails |
| thegreenkiss.com | #242,472 | Chatra, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| vinegarsyndrome.com | #244,106 | Cloudflare edge/CDN, Google Cloud DNS, Google Hosted Libraries + 9 more | Find emails |
| homify.ru | #244,394 | Amazon Route 53, Bunny CDN, BunnyCDN + 9 more | Find emails |
| tracker.co.za | #245,122 | Bootstrap, Font Awesome, Google Ads Conversion + 17 more | Find emails |
| happypay.co.za | #248,012 | ASP.NET, Bootstrap, CDN Fonts + 32 more | Find emails |
| supernote.com | #250,047 | Cloudflare edge/CDN, Hotjar, Let's Encrypt + 8 more | Find emails |
| netlab.ru | #251,921 | Bitrix, Bootstrap, Cloudflare + 7 more | Find emails |
| piquelife.com | #253,659 | Attentive, Cloudflare, Cloudflare edge/CDN + 19 more | Find emails |
| frombalitous.com | #254,189 | Cloudflare edge/CDN, Let's Encrypt, Microsoft 365 + 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 →