1. A document-image-data providing device which provides document image data to an information processing device, comprising: a document image inputting unit configured to input document image data; an area recognition unit configured to recognize a text area of a document image element containing text data among document image elements constituting the input document image data, and another area of a document image element containing data other than the text data; a text data acquiring unit configured to acquire text data contained in the text area recognized by the area recognition unit; and a providing unit configured to provide, in response to a document image data request received from the information processing device, both image data generated from the input document image data to have a resolution lower than a resolution of the input document image data and the text data acquired by the text data acquiring unit, to the information processing device.