The present disclosure is directed to systems and methods for processing advertisement opportunities when a user views content on a mobile device. An agent on a mobile device may contextualize a portion of a page being viewed to identify and send contextual data to a contextualization service. The contextualization service may use the contextual data to select a campaign from a plurality of campaigns to deliver an in line banner advertisement for content being viewed. Based on the selected campaign, the contextualization service may send the agent an advertisement or campaign information for display, such as an inline banner at a natural break in the content being viewed. Instead of having an advertisement predetermined or fixed prior to the display of the content, the present systems and methods may dynamically contextualize the page at the point of viewing based on the content of the page being viewed.