An image processing device capable of repeatedly sending internal data stored inside the device to a server at a predetermined timing, comprises: a hardware processor that: obtains the internal data from the inside the device at every data transmission timing; determines whether or not to send the latest internal data obtained at the current data transmission timing to the server based on a change in an operation status during a period from the previous data transmission timing to the current data transmission timing; and sends the latest internal data to the server when determining to send the latest internal data to the server.