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 |
|---|---|---|---|
| maturesfling.com | #91,012 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| partnersinprivate.com | #91,723 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| choa.org | #91,851 | ASP.NET, Adobe Experience Cloud (Launch), Amazon CloudFront + 16 more | Find emails |
| #4,979 (Tranco) |
| Find emails |
| 5 | toptoon.com | #9,168 (Tranco) | Find emails |
| blueisland.in | #92,548 | Axios, Cloudflare edge/CDN, Google Ads Conversion + 15 more | Find emails |
| amantibollenti.com | #93,073 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| atraccionenlazona.mx | #93,115 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| conexaomadura.com.br | #93,330 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| flirtujtutaj.com | #93,595 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| madurasespana.com | #94,050 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| mikistitkunk.com | #94,120 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| papoaolado.com.br | #94,318 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| study.tj | #94,715 | Bootstrap, Cloudflare, Font Awesome + 8 more | Find emails |
| voisinsecret.com | #94,957 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| edurank.org | #95,186 | Amazon Route 53, Bootstrap, Google Fonts + 8 more | Find emails |
| mlada.in | #99,730 | Cloudflare edge/CDN, GoKwik, Google Analytics + 10 more | Find emails |
| buleto.com | #100,329 | Express, Font Awesome, Google Fonts + 3 more | Find emails |
| flirtespanol.com | #100,413 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| leafstudios.in | #100,534 | Cloudflare edge/CDN, Fancybox, Google Ads Conversion + 14 more | Find emails |
| mamuskizokolicy.com | #100,565 | Apache, Font Awesome, Google Tag Manager + 3 more | Find emails |
| namesrs.com | #103,077 | AOS, Bootstrap, Cloudflare + 10 more | Find emails |
| tranio.com | #112,940 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 2 more | Find emails |
| hicart.com | #113,836 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 6 more | Find emails |
| ghx.com | #114,458 | ASP.NET, Bootstrap, Brightcove + 15 more | Find emails |
| angellight.com | #115,881 | Apache, Bootstrap, Font Awesome + 7 more | Find emails |
| shipxplorer.com | #120,792 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 7 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 →