What the __cfduid cookie does
The '__cfduid' cookie is set by the CloudFlare service to identify trusted web traffic. It does not correspond to any user id in the web application, nor does the cookie store any personally identifiable
Who sets it
Consent category: functional
Functional cookies remember a choice the visitor made, such as a language, a region or a layout preference. They are not essential, so visitors in the EU must be able to decline them, and a site should not set them before consent.
| Name | __cfduid |
|---|---|
| Category | Functional |
| Lifetime | 5 years |
| Set by | Cloudflare |
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From the Conzent cookie database, last updated 2026-10-17. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.