The Privacy Sandbox Timeline for the Web
The Privacy Sandbox proposals are in various stages of the development process. This timeline reflects when we expect new privacy-preserving APIs and other technologies to be ready in support of key use cases, so that Chrome can responsibly phase out third-party cookies. Information may change and will be updated monthly. The proposals are being developed in public forums, in collaboration with members of the industry. We also continue to work with the UK's Competition and Markets Authority in line with the commitments we offered for Privacy Sandbox for the web. We encourage participation through the many public feedback channels that inform development of the proposals. Stakeholders can also use this form to share feedback directly with Chrome. Last Update: September 2023
THIRD-PARTY COOKIES (3PC) AND TESTING
Chrome will provide developers an experiment label for independent testing and simulation of third-party cookie deprecation.
Chrome will deprecate third-party cookies for 1% of Chrome users globally.
Chrome will begin gradually phasing out support for third-party cookies in Q3 2024.
PRIVACY SANDBOX APIs
The technologies and their prototypes are discussed in forums such as GitHub or W3C groups. Some limited testing of solutions might happen at this stage to facilitate discussions.
The technologies for the use case are available for testing via Chrome origin trials or other pre-launch methods. Changes may be made based on testing results and ecosystem feedback.
The technologies for the use case are launched and available for 100% of Chrome traffic. Chrome expects refinements and optimizations as more companies test and use the APIs over time.
Fight spam and fraud on the web
Show relevant content and ads
OT CLOSED - 2023 - Q3
Protected Audience API: The origin trial for Protected Audience API ran from Chrome 101 to 115.
Measure digital ads
OT CLOSED - 2023 - Q3
Attribution Reporting API: The origin trial for Attribution Reporting API ran from Chrome 101 to 115.
Strengthen Cross-site Privacy Boundaries
OT CLOSED - 2021 - Q3
First-Party Sets API: The origin trial for FPS ran from Chrome 89-93.