{"page":"/tools/tcf-consent-string-decoder","modified":"2026-11-10","license":"https://creativecommons.org/licenses/by/4.0/","columns":["Version","Released","Deadline","What changed for the string","Source"],"rows":[["TCF 2.2","May 2023","Policy version 4; older versions invalid after 30 September 2023","Legitimate interest bits for purposes 3 to 6 must be 0","TC String specification"],["TCF 2.3","19 June 2025","28 February 2026","Disclosed Vendors segment mandatory","IAB Europe, updated 15 December 2025"],["TCF 2.4","Specifications 23 July 2026","23 October 2026 (web); 23 February 2027 (app, CTV)","No change to the bit layout; new standardTexts field and feature illustrations in the GVL","IAB Europe letter, 16 July 2026"]],"sourceUrls":[["https://github.com/InteractiveAdvertisingBureau/GDPR-Transparency-and-Consent-Framework/blob/master/TCFv2/IAB%20Tech%20Lab%20-%20Consent%20string%20and%20vendor%20list%20formats%20v2.md"],["https://iabeurope.eu/all-you-need-to-know-about-the-transition-to-tcf-v2-3/"],["https://iabeurope.eu/wp-content/uploads/TCF_V-CMP_comms_TCFpoliciesV5.0.bAndSpecificationsV2.4ConfirmationOf-theTimeline_160726_IABEurope.pdf"]]}