An image forming apparatus includes an execution unit, a reception unit, and a control unit. The execution unit executes a printing job using a tab sheet from a first sheet supply unit and a sheet, other than a tab sheet, from a second sheet supply unit. The reception unit receives an instruction to confirm printed material of the printing job. The control unit controls the execution unit to stop a printing operation of the printing job that the execution unit is executing and print, for confirmation, at least one page included in the printing job, based on receiving the instruction. The control unit further controls the execution unit to restart the stopped printing job after the printing for the confirmation is ended and to execute the printing for the confirmation by not using a tab sheet and by using a sheet other than a tab sheet.