AdMob allows you to choose where you place ads on your sites or app. Ads run wherever you place the install code in your app or site's code. For best performance, we recommend you place ads at the top of the page or app. To enhance performance, you also have the flexibility to alter the appearance of ads on your app or site by adding bold, italicizing or centering ads.
Related Topics:
Types of Ads That Appear on Your App or site
Add Your Mobile site or Android App
Add Your iPhone site or iPhone App