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Polyfill.io (compromised CDN) market share on brand websites
Polyfill.io (compromised CDN) runs on 0.2% of brand websites in our sample (3 of 1,359). Market share by country, top sites using it and technologies it is…
0.2%
Share in UK brands
3 / 1,359
16
frequent companions
Google Tag Manager
By market
- UK brands0.2%3
- United Kingdom0.2%18
- Global<0.1%32
Trend
Often used with
- Google Tag ManagerTag managers44%
- CloudflareCDN41%
- jQueryJavaScript libraries38%
- BootstrapCSS frameworks34%
- cdnjsCDN25%×2.6
- Cloudflare Web AnalyticsAnalytics25%×2
- Google Marketing Platform (DV360/CM360)Advertising & pixels25%×3.4
- Google Analytics 4Analytics22%
- nginxWeb servers22%
- Google Publisher Tag (Ad Manager)Advertising & pixels22%×3.7
Top sites using Polyfill.io (compromised CDN)
| Tranco | Site | Also uses | Hosting |
|---|---|---|---|
| 193 | theguardian.com | ComscoreGoogle Marketing Platform (DV360/CM360)Google Publisher Tag (Ad Manager)Sentry | Fastly |
| 310,407 | krispykreme.co.uk | Adobe FontsBootstrapcdnjsGoogle MapsGoogle Tag ManagerHotjar | Cloudflare |
| — | kilchomandistillery.com | BootstrapcdnjsCookieYescore-jsFathomFont Awesome | Fastly |
Our crawler: 1,359 sites · UK brands · updated 23 Oct 2026 · Methodology
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