An image processing device provides a detection result of additional information added to each of pages which constitute a document. The image processing device includes an input part which inputs image data of each page of a document. A detection part generates a page detection result of additional information added to the image data, the page detection result being generated on a page basis and indicating a result of detection of the additional information for each page. A detection result output part outputs an outline result indicating an outline of the page detection results for the respective pages on a document basis, together with an identifier of the document associated with the outline result.