14. The computer storage media of claim 10 , wherein performing the action comprises displaying text associated with the first recognized object.
10. A non-transitory computer storage media encoded with one or more computer programs, the one or more computer programs comprising instructions that when executed by data processing apparatus cause the data processing apparatus to perform operations comprising: for stored data corresponding to image, supplementing the stored data with metadata that identifies one or more objects in the image; causing the image to be rendered; recognizing one or more objects in the rendered image based on the metadata; enabling a portion of the rendered image corresponding to a first recognized object to be user-interactive; detecting a user interaction with the portion of the rendered image corresponding to the first recognized object; and in response to detecting the user interaction, performing an action using the metadata characterizing the first recognized object.