Learn more about changes to Chrome's treatment of third-party cookies and understand what actions you need to take to preserve your site's features.
Prepare for changes
Review your cookies and make a list of those cookies for which you will need to take action to ensure they keep functioning properly.
Start auditing
Set up Chrome to simulate the state when third-party cookies are blocked by user choice.
Start testing

Migrate to privacy preserving solutions

Once you have identified the cookies with issues and you understand the use cases for them, you can work through the following options to pick the necessary solution.
The new cookie attribute, Partitioned, allows developers to opt a cookie into partitioned storage, with separate cookie jars per top-level site.
Explore CHIPS
Storage Access API allows iframes to request storage access permissions when access would otherwise be denied by browser settings.
Explore Storage Access API
Related Website Sets (RWS) is a way for a company to declare relationships among sites, so that browsers allow limited third-party cookie access for specific purposes.
Explore Related Website Sets
A web API for privacy-preserving identity federation.
Explore FedCM

Guides for common workflows

Understand how to test common workflows that may rely on third-party cookies and decide on which privacy-preserving alternatives to migrate to.
Find recommended solutions for sign-in scenarios.
Learn more
Test for embed-related journeys that rely on third-party cookies, and learn how to choose between the privacy-preserving alternatives.
Learn more

Temporary exceptions

Cross-site cookies have been a critical part of the web for over a quarter of a century. Moving to alternative solutions requires a coordinated and incremental approach, and we understand there are cases where sites need extra time to make the necessary changes and preserve critical user experiences.
Learn more
Chrome's third-party cookie grace period provides a way for sites and services experiencing breakage to request additional time to move away from third-party cookies to alternative solutions.
Learn more
Chrome is providing a mechanism to allow sites to opt out of the third-party cookie grace period for a percentage of users.
Learn more
Learn more about temporary heuristics based exceptions.
Learn more
Learn more about Chrome Enterprise policies for third-party cookies.
Learn more

News and updates

Features and tooling to help you transition from third-party cookies.
Chrome is providing a lookup service to show how third-party cookie availability is affected by Chrome's third-party cookie grace period, and grace period opt-out configuration.
When a breakage report is filed at goo.gle/report-3pc-broken and meets all eligibility criteria, Chrome initiates a grace period that provides continued access to third-party cookies for a limited time. Chrome is now providing a mechanism to allow sites to opt out of the grace period for a percentage of users.
Learn how Latin America's leading ecommerce platform Mercado Libre made their journey to reduce reliance on third-party cookies and protect the privacy of their customers.
We want to ensure we capture the various scenarios where sites break without third-party cookies to ensure that we have provided guidance, tooling, and functionality to allow sites to migrate away from their third-party cookie dependencies. If your site or a service you depend on is breaking with third-party cookies disabled, you can submit it to our breakage tracker.
Report an issue