API status and feature releases

Each of the Privacy Sandbox proposals are in varied stages of the development process. Within each proposal, there are individual features that have different expected availability.

To review the latest information on any proposal or API, visit the respective overview documentation and the Privacy Sandbox timeline.

# Aggregation Service

# Attribution Reporting

• The Attribution Reporting proposal is now moving to general availability. Raise questions and follow discussion.
• Discuss industry use cases in the Improving Web Advertising Business Group.
• Blink status
• Attribution Reporting Chrome platform status: Specific to this API on Chrome.
• Ads API Chrome platform status: A collection of APIs to facilitate advertising: Protected Audience API, Topics, Fenced Frames and Attribution Reporting.

You can keep track of the API changes.

# Bounce tracking mitigations

• The Bounce tracking mitigations proposal has been implemented for testing in Chrome. If you try this out and have any feedback, we'd love to hear it.
• Chrome platform status.

# CHIPS

• Enabled by default in Chrome 114 and higher.
• An origin trial, now complete, was available from Chrome 100 to 116.
• Read the Intent to Experiment and Intent to Ship.

# Federated Credential Management API (FedCM)

• Chrome Platform Status
• FedCM shipped in Chrome 108.
• The FedCM proposal is open for public discussion.
• FedCM isn't supported in other browsers yet.
  • Mozilla is implementing a prototype for Firefox and Apple has expressed general support and interest in working together on the FedCM proposal.

# Fenced Frames

• The Fenced Frames proposal is now in general availability.
• Chrome Platform Status

# IP Protection

• The IP Protection proposal has entered public discussion.
• This proposal has not been implemented in any browser.

# Private Aggregation API

• The Private Aggregation API is now moving to general availability.
• New function names
  • The contributeToHistogram() function is available in Chrome Canary, Dev, Beta, and Stable M115+
  • The contributeToHistogramOnEvent() function is available in Chrome Canary, Dev, Beta, and Stable M115+
• Legacy function names
  • The following function names will be deprecated in M115
• See the Chrome platform status page page to see the API’s current stage.

# Private State Tokens

• Chrome Platform Status.
• In origin trial Chrome 84 to 101: now closed.
• Demo.
• Chrome DevTools integration.

# Protected Audience

Descendant of TURTLEDOVE. Formerly named FLEDGE. Also refer to Status of pending Protected Audience API capabilities for more information.

• The Protected Audience API proposal is now moving to general availability. Raise questions and follow discussion.
• Protected Audience API status of pending capabilities details changes and enhancements to the Protected Audience API API and features.
• Blink status
• Protected Audience API Chrome platform status: Specific to the Protected Audience API on Chrome.
• Ads API Chrome platform status: A collection of APIs to facilitate advertising: Protected Audience API, Topics, Fenced Frames and Attribution Reporting.

To be notified of status changes in the API, join the mailing list for developers.

# Related Website Sets (formerly First-Party Sets)

• Related Website Sets (formerly First-Party Sets) is in incubation in WICG
• The first origin trial ran from Chrome 89 to 93.
• Chrome Platform Status.
• Blink status.
• Chromium Projects
• Related Website Sets submission guidelines

# Shared Storage

• The Shared Storage API has now moved to general availability.
• A live demo is available, as is testing:
  • URL selection output gate is available for local testing from Chrome M105+.
  • Private Aggregation output gate is available for local testing from Chrome M107+.
  • Measurement with the Private Aggregation API is now in general availability.
• Chrome platform status

# Topics API

• The Topics API is now in general availability.
• To provide your feedback on the Topics API, create an Issue on the Topics explainer or participate in discussions in the Improving Web Advertising Business Group. The explainer has a number of open questions that still require further definition.
• Topics API latest updates details changes and enhancements to the Topics API and implementations.
• Topics Chrome platform status: Specific to the Topics API on Chrome.
• Ads API Chrome platform status: A collection of APIs to facilitate advertising: Protected Audience API, Topics, Fenced Frames and Attribution Reporting.

# User-Agent reduction and Client Hints (UA-CH)

Limit passively shared browser data to reduce the volume of sensitive information which leads to fingerprinting.

• Origin trial Chrome 95 to 103, ended March 7, 2023.
• Deprecation trial Chrome 103 to Chrome 116, ended September 23, 2023.
• Chrome DevTools integration
• Review the UA-CH Chrome platform status

User-Agent Client Hints API documentation is available on MDN.

# Find out more

# Blink, Chromium, and Chrome

• What are Chrome release channels?
• Chrome release schedule
• Process for launching new features in Chromium
• Intent to explain: Demystifying the Blink shipping process
• blink-dev: implementation status and discussion of features in Blink, the rendering engine used by Chromium
• Chromium code search
• What are Chrome flags?

# Origin trials

• Get started with Chrome's origin trials
• Third-party origin trials
• Troubleshoot origin trials