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Changes to Chrome's treatment of third-party cookies | Privacy Sandbox | Google for Developers
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analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"> <devsite-view-release-notes></devsite-view-release-notes> </div><devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded> </devsite-toc> <devsite-recommendations-dropdown class="nocontent"></devsite-recommendations-dropdown> <div class="devsite-article-body clearfix "> <p>Chrome is moving towards a <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://privacysandbox.com/news/privacy-sandbox-update">new experience</a> that lets people make an informed choice with respect to third-party cookies.</p> <p>You need to prepare your site for users who choose to browse without third-party cookies.</p> <h2 id="take_action_to_ensure_your_sites_are_prepared" data-text="Take action to ensure your sites are prepared" tabindex="-1">Take action to ensure your sites are prepared</h2> <p>We've broken the process down into these key steps, to ensure you're prepared for your site to run without third-party cookies:</p> <ol> <li><a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/prepare/audit-cookies?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Audit your third-party cookie usage</a>.</li> <li><a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/prepare/test-for-breakage?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Test for breakage</a>.</li> <li>Migrate to privacy preserving solutions:</li> </ol> <ul> <li>For <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://web.dev/articles/same-site-same-origin%23same-site-cross-site">cross-site</a> cookies which store data on a per site basis, like an embed, consider <a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/chips?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto"><code translate="no" dir="ltr">Partitioned</code> with CHIPS</a>.</li> <li>For cross-site cookies that would otherwise be restricted by browser settings, consider prompting users with request for storage access permissions with <a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/storage-access-api?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Storage Access API</a>.</li> <li>For cross-site cookies across a small group of meaningfully linked sites, consider <a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/related-website-sets?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Related Website Sets</a>.</li> </ul> <p>The Privacy Sandbox provides a range of purpose-built APIs for specific use cases without a need for third-party cookies:</p> <ul> <li><strong><a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/fedcm?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Federated Credential Management (FedCM)</a></strong> enables federated identity services allowing users to sign in to sites and services.</li> <li><strong><a href="https://developers-google-com.translate.goog/privacy-sandbox/protections/private-state-tokens?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Private State Tokens</a></strong> enable anti-fraud and anti-spam by exchanging limited, non-identifying information across sites.</li> <li><strong><a href="https://developers-google-com.translate.goog/privacy-sandbox/relevance/topics?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Topics</a></strong> enables interest-based advertising and content personalization.</li> <li><strong><a href="https://developers-google-com.translate.goog/privacy-sandbox/relevance/protected-audience?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Protected Audience</a></strong> enables remarketing and custom audiences.</li> <li><strong><a href="https://developers-google-com.translate.goog/privacy-sandbox/relevance/attribution-reporting?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Attribution Reporting</a></strong> enables measurement of ad impressions and conversions.</li> </ul> <p>If you still have third-party cookie use cases that are not covered by these options, you should <a href="https://developers-google-com.translate.goog/privacy-sandbox/cookies/prepare/overview?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto#report-issues">report the issue to us</a> and consider if there are alternative implementations that don't depend on features that can enable cross-site tracking.</p> <h2 id="preserve" data-text="Preserve critical user experiences" tabindex="-1">Preserve critical user experiences</h2> <p>Cross-site cookies have been a critical part of the web for over a quarter of a century. This makes any change, especially a breaking change, a complex process that requires a coordinated and incremental approach. While the additional cookie attributes and new privacy-focused APIs account for the majority of use cases, there are specific scenarios where we want to ensure we don't break the experience for people using those sites.</p> <p>Explore these temporary options, such as <a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/temporary-exceptions/third-party-deprecation-trial?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">third-party deprecation trial</a> and enterprise controls, while you continue making the necessary changes to migrate away from unrestricted third-party cookies.</p> <p>Read more about the options offered in <a href="https://developers-google-com.translate.goog/privacy-sandbox/3pcd/temporary-exceptions/preserving-critical-user-experiences?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=auto">Preserving critical user experiences</a>.</p> <h2 id="report-issues" data-text="Report issues with third-party cookies and get help" tabindex="-1">Report issues with third-party cookies and get help</h2> <p>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 browser features 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 at <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://goo.gle/report-3pc-broken">goo.gle/report-3pc-broken</a>.</p> <p>If you have questions about third-party cookies, you can <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://github.com/GoogleChromeLabs/privacy-sandbox-dev-support/issues/new/choose">raise a new issue using the "third-party-cookies" tag</a> in our developer support repository.</p> </div><devsite-recommendations display="in-page" hidden yield> </devsite-recommendations> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-feedback position="footer" project-name="Privacy Sandbox" product-id="5335444" bucket="" context="" version="t-devsite-webserver-20241114-r00-rc02.464922260396498922" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="footer" class="nocontent" disable-product-feedback project-icon="https://developers.google.com/static/privacy-sandbox/assets/images/privacy-sandbox-logo.png"> <button> Send feedback </button> </devsite-feedback> <devsite-recommendations id="recommendations-link" yield></devsite-recommendations> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://translate.google.com/website?sl=auto&tl=en&hl=auto&u=https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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