Cookie category IDs

When you read window.onePrivacyCookieGroups or the onePrivacyConsent cookie, you'll see comma-separated IDs like C0001,C0003. Each ID maps to a category. The IDs are stable across releases.

The IDs

ID	Category	What it covers
C0001	Necessary	Always granted. Required for the site to function (login, cart, security).
C0002	Functional	Remembers visitor preferences (language, region).
C0003	Performance	Analytics and site usage measurement.
C0004	Targeting	Advertising, retargeting, cross-site tracking.

C0001 is always in the list because Necessary cookies cannot be turned off.

Reading them

check-categories.js

const accepted = (window.onePrivacyCookieGroups || '').split(',');

const allows = {
  necessary:  accepted.includes('C0001'),
  functional: accepted.includes('C0002'),
  analytics:  accepted.includes('C0003'),
  marketing:  accepted.includes('C0004'),
};

Naming in the dashboard vs IDs in code

The dashboard shows friendly names ("Functional", "Performance", "Targeting"). The IDs above are what you'll see in onePrivacyCookieGroups and the consent cookie. Use the IDs in code, the names in copy.

ID	Dashboard label	Common alternative names
C0001	Necessary	Strictly necessary, Essential
C0002	Functional	Preferences
C0003	Performance	Analytics, Statistics
C0004	Targeting	Marketing, Advertising

Backwards compatibility

These IDs are part of the public API. If we ever introduce new categories, they'll get new IDs. Existing IDs won't be renumbered.

What's next

JavaScript API.

Consent events.

Cookie categories explained (for non-developers).