An image forming apparatus includes the following. A forming operating unit performs image forming based on image data. A data obtaining unit obtains the image data as a target of the image forming. An instruction obtaining unit obtains an operation instruction to instruct the forming operating unit to perform the image forming. An authentication receiver receives a predetermined authentication operation regarding approval of reception of the operation instruction. A hardware processor performs the image forming when a limit setting regarding a limit of reception of the operation instruction is set on the image data as the target of the image forming according to the obtained operation instruction and it is determined that the authentication receiver received the authentication operation. The instruction obtaining unit obtains a setting changing instruction to change the limit setting. The hardware processor changes the limit setting based on the obtained setting changing instruction.