An image processing apparatus includes a vectorizing unit configured to convert bitmap image data into vectorized data; an integrated document generating unit configured to generate an integrated document which includes the vectorized data and metadata; an accompanying information extraction unit configured to extract one or more of accompanying information relating to the bitmap image data from the bitmap image data; a selection unit configured to select accompanying information meeting conditions which have been defined beforehand out of one or more of accompanying information extracted by the accompanying information extraction unit; and a registration unit configured to register the accompanying information selected by the selection unit as the metadata of the integrated document.