Advertising keeps Google and many of the websites and services you use free of charge. We work hard to make sure that ads are safe, unobtrusive and as relevant as possible. For example, you won’t see pop-up ads on Google and we terminate the accounts of hundreds of thousands of publishers and advertisers that violate our policies each year – including ads containing malware, ads for counterfeit goods or those that attempt to misuse your personal information.
Cookies help to make advertising more effective – and that is what keeps thousands of websites free of charge. Without cookies, it’s harder for an advertiser to reach its audience, or to know how many ads were shown and how many clicks they received.
Our advertising cookies
To help our partners manage their advertising and websites, we offer many products, including AdSense, AdWords, Google Analytics, and a range of DoubleClick-branded services. When you visit a page that uses one of these products, either on one of Google’s sites or one of our partners’, various cookies may be sent to your browser.
These may be set from a few different domains, including google.com, doubleclick.net, invitemedia.com, admeld.com, googlesyndication.com, or googleadservices.com. Some of our advertising products enable our partners to use other services in conjunction with ours (like an ad measurement and reporting service) and these services may send their own cookies to your browser. These cookies will be set from their domains.
How you can control advertising cookies
You can use the Ads Preferences Manager to manage the Google ads you see.
Finally, you can manage cookies in your web browser.
Other technologies used in advertising
Google’s advertising systems may use other technologies, including Flash and HTML5, for functions like display of interactive ad formats. We also may use the IP address, for example, to select ads based on your general location.
Anonymous identifiers on mobile devices
To serve ads in services where cookie technology may not be available (for example, in mobile applications), we may use anonymous identifiers. These perform similar functions to cookies. To control the ads that we serve to apps on your mobile device, you can use our Ads Preferences Manager for apps. To change your preferences, or to opt out of interest-based ads, follow the instructions below for your mobile device.
- Open Play Store on your device
- Press Menu and select Settings
- Go to Google AdMob Ads under Other
Some apps on iOS 6 devices use Apple’s Advertising Identifier; to learn more about limiting ad tracking using this identifier, visit the Settings menu on your iOS 6 device. Legacy apps on your iOS 6 device, as well as apps on devices running older versions of iOS, may use a different device identifier. To opt out for these apps:
- Open the Google Search app on your device
- Press the Settings icon
- Go to Ads Preferences