Last Updated: June 10, 2024

This PubMatic Opt Out page is intended to help you opt out of the use of cookies and mobile advertising identifiers for interest-based advertising and cross-device targeting purposes.  Please follow the instructions below to opt out.

Please note that opting out of interest-based advertising and cross-device targeting does not mean you will no longer receive online advertising. It does mean that the company from which you have opted out of receiving interest-based advertising or cross-device targeting will no longer deliver ads tailored to your Web preferences and usage patterns on a particular web browser or device.

Opting Out of Interest-Based Advertising from Cookies

If you want to opt out from having PubMatic’s services collect information via cookies about your Internet visits, for purposes of interest-based advertising, please use this opt-out option.

When you opt out, an opt-out cookie will be stored in your browser. Please note the following important information related to opting out:

  • The opt-out only applies to the browser in the device in which you set it. For example, if you set the opt-out while using the Firefox browser, then the opt-out applies only to the Firefox browser on the device where it was set, not other browsers or devices.
  • To opt out from other browsers and devices, you will need to repeat the opt-out process in such browsers and devices.
  • If you block the opt-out cookie or your browser is configured to block third-party cookies, then the PubMatic opt-out cookie may not work.
  • If you delete your cookies, you will need to opt out again. You may download a browser extension that will help preserve the opt-out preferences you set by visiting

You can tell if your browser and computer have the opt-out cookie present by reviewing your status at this page.

If you opt out and change your mind, you can always opt in by using the opt-in above.

See PubMatic’s Website Cookie Policy and Platform Cookie Policy for more information on how PubMatic uses cookies.

For more information about cookies, including how to see what cookies have been set on your device and how to manage and delete them, visit

For more information about how to clear your browser cache, see your browser’s instructions for doing so.  Please note that deleting or resetting cookies and clearing your browser cache will not opt you out of receiving interest-based advertising (including retargeting) from PubMatic’s services. 

Some of our publisher clients have their own opt-out mechanisms that are linked from their sites or their online-posted privacy policies. You should review the privacy policies of those companies for these opt-out links if you no longer wish to receive targeted advertising from a particular company, or multiple companies.

Opting Out of Interest-Based Advertising for Mobile Advertising Identifiers

Our clients and partners may display interest-based advertising to you in mobile applications, based on your use of mobile applications over time and across non-affiliated apps. To learn more about these practices and how to opt out, please visit the DAA’s AppChoices mobile app, and follow the instructions provided in the AppChoices mobile app.

Opting Out of Cross-Device Targeting

Our clients and partners may combine and use information from websites or applications on your current browser or device with information from your other browsers or devices for advertising purposes.  To opt out of such practices, please follow the instructions above for opting out on each of your browsers and on each of your mobile devices, including: