Methods, systems, and apparatus, including computer programs encoded on computer storage media, for presenting an augmented reality presentation. One of the methods includes receiving data for a web page associated with a uniform resource indicator and including data for augmented reality presentations. An augmented reality presentation is selected for the web page, and automatically presented using the data for the augmented reality presentation, and data from a camera included in a mobile device. After automatically presenting the augmented reality presentation, data is received indicating that the augmented reality presentation should end. After receiving the data indicating that the augmented reality presentation should end, the web page is presented.