According to one embodiment, an image forming system includes a plurality of image forming apparatuses and an information terminal that communicates with the plurality of image forming apparatuses. The information terminal includes a communication unit and a controller. The communication unit communicates with the image forming apparatus. The controller transmits first information relating to a job to the plurality of image forming apparatuses. The controller outputs certification information corresponding to the first information. When transmission start information of the job is received from the image forming apparatus, the controller instructs the image forming apparatus to execute the job. The image forming apparatus includes an input device, a communication unit, a storage unit, and a controller. The input device receives an input. The communication unit communicates with the information terminal. The storage unit stores data. After the first information is received, the controller transmits transmission start information of the job to the information terminal which is a transmission source of the first information. When the certification information is input by the input device, the controller executes the job corresponding to the certification information.