A scanner includes: a communication device communicable with an information processing device; and a controller. The controller is configured to cause the scanner to execute: a determination processing in which the scanner determines whether a reading request which is a request for reading a pseudo image file is received from the information processing device; a scan executing processing in which the scanner executes a scan processing when the reading request for reading the pseudo image file is received in the determination processing; and a scan-data writing processing in which the scanner writes scan data created in the scan executing processing, into the pseudo image file.