Our technology can determine the primary language of a page. If your content is in a language supported by our program, AdSense will target ads in the appropriate language to your content.
We also target ads to match the language settings specified by advertisers in their advertising campaigns. Language targeting allows advertisers to choose the language of the sites that they'd like their ads to appear on.
Example
A person who views Google Display Network (GDN) content in Thai may view ads from campaigns targeted to Thai. Also, someone whose Google language is set to Spanish can view ads from advertising campaigns targeted to Spanish.
In addition, we may note the language of the pages a user is viewing or has recently viewed to determine which ads to show.
This means that we may detect the language from either pages that the person had viewed in the past, or the page that they are currently viewing. In this case, AdSense may target ads in the user's detected language rather than in the language of your content.
Example
A person reads several cooking blogs on the GDN written in Japanese, and they view ads from campaigns targeted to Japanese speakers. They may also have Japanese ads even when they read other blogs on the GDN that are written in English.
