To provide an image forming apparatus that specifies print data using a code image, the image forming apparatus having more applicable functions.

A network composite machine 1 including the image forming apparatus includes an operation unit 11 configured to receive a deletion instruction for print data from a user, a read unit 13 configured to read a QR code (code image) printed on a sheet together with the print data, an ID acquisition unit 10D configured to analyze the read QR code and to acquire a unique ID to specify an identification character string and the print data, a data retrieval unit 10E configured to retrieve the print data specified with the unique ID from a storage folder, and a data processing unit 10F configured to delete the print data retrieved by the data retrieval unit 10E when the deletion instruction is received and the identification character string is acquired.