Last updated: August 12, 2026
GPP Updated to support the latest MSPA
As of August 2026, the GPP specification has been updated to support the latest version of the MSPA.
This update is in public comment until September 11, 2026. Comment can be made in GitHub using the button below.
Read about why we renamed the GPP to Global Privacy Protocol here.
State Strings from 2025 2nd Half Update Finalized
The 2nd Half of 2025 State sections for Maryland, Indiana, Kentuck, and Rhode Island in the Global Privacy Protocol (GPP) that were in Public Comment until December 1, 2025 have now been pushed to production as final. You can view the final release in the Global Privacy Protocol github repository US States Section.
MN State String in Finalized
The MN State section in the Global Privacy Protocol (GPP) that was in Public Comment until August 18th has now been pushed to production as final. You can view the final release in the Global Privacy Protocol github repository US States Section.
About the Global Privacy Protocol
The Global Privacy Protocol (GPP) is part of a portfolio of solutions developed by IAB Tech Lab, as part of the Project Rearc initiative, to help the industry solve the challenges that come with the need to address differing and evolving privacy regulations worldwide.
The GPP is a protocol designed to streamline the transmission of privacy, consent, and consumer choice signals from sites and apps to ad tech providers; it enables advertisers, publishers and technology vendors in the digital advertising industry to adapt to regulatory demands across markets. The GPP currently supports the following privacy strings: the IAB Europe TCF, the IAB Canada TCF, the MSPA’s US National string, and a number of US State strings. The Protocol will continue to be expanded to support additional jurisdictions with data privacy regulations. For the most up-to-date information on supported privacy strings, see Section Information in the Global Privacy Protocol github repository.
The Global Privacy Working Group has developed GPP implementation guidelines which were finalized in February 2025. You can access the guidelines here.
Global Privacy Protocol String Version History
| Date | Version | Comments |
| Nov 3, 2023 | 1.0 | Added clarifications to encoding mechanism, fixed encoded header examples |
| Sept 28, 2022 | 1.0 | Published final public version |
Consent Management Platform API Version History
| Date | Version | Comments |
| June 2023 | 1.1 | Removal of return values in favor of callback functions. Removal of getGPPData command |
| Sept 28, 2022 | 1.0 | Published final public version |
Working Groups
Related Links
- IAB Tech Lab releases GPP Implementation Guidelines for Public Comment
- IAB Tech Lab Releases Data Deletion Request Framework for Public Comment
- IAB Tech Lab Finalizes Global Privacy Platform and Advises the Industry to Prepare for Updated US State-Level Signaling
- IAB Tech Lab Unveils Global Privacy Platform
On Demand
- Taking Charge of Your Data: Public Comment on Data Deletion Request Framework (November 2023 VOD)
- Global Privacy Platform Webinar (August 2022 VOD)