1. An image forming system comprising: an information terminal including a camera module and a terminal storage part; and an image forming apparatus including an image reading section, wherein the terminal storage part stores a captured image obtained by image capturing of a document by the camera module; the image reading section reads a document, the information terminal displays a setting page for setting a layout of the captured image to accept a setting as to the layout of the captured image in the setting page and transmit, to the image forming apparatus, layout information indicative of the layout of the captured image in the setting page, and when executing a job involving document reading, the image forming apparatus reads the document in the image reading section, generates image data of a job page which is a page to be used in execution of the job, decides whether or not a read image obtained by the document reading corresponds to the captured image so that, if the read image corresponds to the captured image, the image forming apparatus generates the image data of the job page including the read image corresponding to the captured image and makes a layout of the read image in the job page similar to the layout of the captured image corresponding to the read image in the setting page and, if the read image does not correspond to the captured image, the image forming apparatus informs that the read image does not correspond to the captured image and then either deletes the read image or generates the image data of the job page including the read image based on an additionally made setting.