Privacy Sandbox technologies retired, including Attribution Reporting API and Topics

17 October 2025In force

Who is affected

All stores and ad platforms that had prepared cookieless measurement via Privacy Sandbox

What it changes

Google's proposed cookieless measurement replacement disappears, so server-side tracking becomes the path forward.

What to do

Nothing to fix in your theme: this change comes from the browser, not from your store. It makes server-side measurement more reliable than anything depending on your visitor's browser.

Official source

privacysandbox.google.comhttps://privacysandbox.google.com/blog/update-on-plans-for-privacy-sandbox-technologies

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All twenty-six changes