Cookies and user identification
Google tags set and read cookies to identify unique users across browsing
sessions. Cookies are small files saved on peoples' computers to help store
preferences and other information that's used on web pages that they visit.
Google uses cookies in various ways. Remarketing and Google Analytics both use
cookies to help do things like run your ads or measure your success. The
conversion measurement features of Google Ads and Campaign Manager also use
cookies. To help you measure sales and other conversions from your ad, a cookie
is added to a person's computer when the person clicks an ad.
For a detailed list of cookies used by Google, refer to the advertising and
measurement cookie reference.
In most cases, the default cookie preferences don't have to be modified —
Only make changes to these settings if your website requires it.
Configure and customize cookies →
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2024-10-09 UTC.
[null,null,["Last updated 2024-10-09 UTC."],[[["Google uses cookies to identify users, store preferences, run ads, and measure website success."],["Google Ads and Campaign Manager utilize cookies to track conversions like sales and ad clicks."],["Website owners can generally rely on default cookie settings but have the option to customize them if needed."]]],["Google tags utilize cookies to recognize unique users across browsing sessions. These cookies, stored on users' computers, store preferences and data. Google employs cookies for purposes like remarketing, Google Analytics, and measuring ad conversions in Google Ads and Campaign Manager. When a user clicks an ad, a cookie is placed on their computer to track sales and other conversions. While most websites do not need cookie modification, advanced users can change these settings. A detailed list of Google's cookies is available via a provided link.\n"]]