An image processing apparatus includes: a structure information acquisition portion that acquires, from a list which is included in each of plural pieces of image data sorted in a predetermined order and is formed of rows and columns, structure information which includes row information including at least the number of the rows of the list and heights of the rows thereof and column information including at least the number of the columns thereof and the widths of the columns thereof; a list connection determination portion that determines, based on the acquired structure information, a set of connected lists among the lists respectively included in the plural pieces of the image data, and a connection direction of the connected lists; and a list connection portion that connects the set of the determined lists in the determined connection direction in an order of the plural pieces of the image data listed.