FewCookies

Cookie glossary · Strictly necessary

What is the OTAdditionalConsentString cookie?

Stores the Google Additional Consent string alongside TCF, managed by OneTrust. It is set by OneTrust and classified as "Strictly necessary". No consent required.

At a glance

Provider OneTrust
Category Strictly necessary
Consent required? No
Typical domain Varies (first-party)

How FewCookies handles this cookie

FewCookies recognises OTAdditionalConsentString from our database of 1,300+ known cookies and classifies it automatically as "Strictly necessary". The free check tells you whether this cookie is detected on your site and whether your banner handles it correctly — an instant, surface-level check, no account needed.

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Frequently asked questions

Do you need consent for the OTAdditionalConsentString cookie?

No. OTAdditionalConsentString is a strictly necessary cookie, exempt from consent under Article 5(3) of the ePrivacy Directive and Law 506/2004. You may use it without the visitor's prior agreement.

What does the OTAdditionalConsentString cookie do?

Stores the Google Additional Consent string alongside TCF, managed by OneTrust.

Who sets the OTAdditionalConsentString cookie?

The OTAdditionalConsentString cookie is associated with OneTrust and is classified as strictly necessary.