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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 1,277). Market share by country, top sites using it and technologies it is…
0.2%
Share in UK brands
3 / 1,277
16
frequent companions
Google Tag Manager
By market
- UK brands0.2%3
- United Kingdom<0.1%11
- Global<0.1%24
Trend
Often used with
- Google Tag ManagerTag managers50%
- BootstrapCSS frameworks42%×1.7
- CloudflareCDN38%
- jQueryJavaScript libraries38%
- cdnjsCDN29%×3.1
- Google FontsWeb fonts29%
- nginxWeb servers29%×1.6
- Google Marketing Platform (DV360/CM360)Advertising & pixels29%×4
- Universal Analytics (legacy)Analytics29%×3.2
- Google Analytics 4Analytics25%
Top sites using Polyfill.io (compromised CDN)
| Tranco | Site | Also uses | Hosting |
|---|---|---|---|
| 203 | theguardian.com | ComscoreGoogle Marketing Platform (DV360/CM360)Google Publisher Tag (Ad Manager)Sentry | Fastly |
| 279,973 | krispykreme.co.uk | Adobe FontsBootstrapcdnjsGoogle MapsGoogle Tag ManagerHotjar | Cloudflare |
| — | kilchomandistillery.com | BootstrapcdnjsCookieYescore-jsFathomFont Awesome | Fastly |
Our crawler: 1,277 sites · UK brands · updated 13 Nov 2026 · Methodology
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