Browsers are restricting access to third-party cookies, as these can be used to track users across sites and hinder user privacy. The Attribution Reporting API enables those measurements in a privacy-preserving way, without third-party cookies. Testers can use debug reports to understand gaps in measurement results between cookie-based implementation and Attribution Reporting reports.
The Privacy Sandbox
What is the Privacy Sandbox? Proposal lifecycle in the Privacy Sandbox Timeline Glossary and key concepts Privacy Sandbox events Privacy Sandbox demos Blog Privacy Sandbox videos
Chrome-facilitated testing Relevance and measurement unified origin trial Enroll your site API status and feature releases Feedback
Prepare for phasing out third-party cookies Related Website Sets Related Website Sets: developer guide How Chrome evolved the First-Party Sets proposal Cookies Having Independent Partitioned State (CHIPS) Storage Partitioning Fenced frames
Federated Credential Management API Federated Credential Management API: developer guide Federated Credential Management API updates
Shared Storage Shared Storage API walkthrough Topics API overview Topic classification Developer guide Integration guide Experiment and participate Topics API demos Test topic inference in a colab Topics API latest updates
Protected Audience API Experiment and participate
Protected Audience API: developer guide Seller guide: run ad auctions Buyer guide: join interest groups and generate bids Protected Audience API auction reporting Sequential auction setup with header bidding and multi-seller Protected Audience auction Improve Protected Audience API auction latency Opt-out of the Protected Audience API Report on Protected Audience API auction results Troubleshoot the Protected Audience API
Status of pending Protected Audience API capabilities Protected Audience API walkthrough Content selection with Shared Storage Creative rotation Creative selection by frequency A/B Testing Known customers
Maximize ad relevance Attribution Reporting overview Attribution Reporting end-to-end Experiment and participate Why Chrome plans to ship the Attribution Reporting API
Attribution Reporting API developer guide Get started with Attribution Reporting Register attribution sources Register attribution triggers Prioritize specific clicks, views, or conversions Define custom rules using filters Prevent duplication in reports Custom report windows Register multiple reporters Report schedules Constraints on Aggregation Reporting data Web-to-app and app-to-web measurement Understanding aggregation keys Understanding noise in summary reports Working with noise Contribution budget for summary reports
API updates Private Aggregation API Private Aggregation API fundamentals Experiment and participate Unique reach measurement User demographic reporting K+ frequency measurement
Aggregation Service Summary reports Table of contents
