This invention is, in a remote operation apparatus which transmits information to a terminal device having a display part which displays received information, for the purpose of operability improvement on the occasion of inspecting structured documents such as Web pages, in a document inspection apparatus with a small screen size, equipped with an input part which inputs various instructions, a display part which displays various information, a communication processing part which obtains display information which is displayed on a display screen of the display part through a network, an area recognition processing part which extracts a size of a rectangular area which is included in a window which was obtained by the communication processing part and is displayed on the display part, and display information in the rectangular area, a storage part which stores size information of the display screen of the display part of the terminal device, an area change processing part which modifies a size of the rectangular area to a size of the display screen which was stored in the storage part, and obtains display information in the rectangular area, and control means which controls the communication processing part so as to transmit the display information which was modified by the area change processing part to the terminal device.