A communication system may include a relay apparatus, an image processing apparatus and a terminal apparatus. The terminal apparatus may receive first access information for accessing converted data from the image processing apparatus in accordance with the short distance wireless communication technology. The terminal apparatus may display a converted image represented by converted data after the converted data is received from the relay apparatus in response to the receiving of the first access information. The image processing apparatus may receive an image processing command from the terminal apparatus in accordance with the short distance wireless communication technology after the first access information is received by the terminal apparatus. The image processing apparatus may receive a target image data from the relay apparatus and execute image process toward the target image data.