An inkjet recording apparatus includes an image forming device and a controller. The image forming device includes a recording head unit and forms on paper a fold line image representing a fold line. The controller includes a first selection section. The first selection section selects formation of the fold line image in a “first manner” or a “second manner”. In the “first manner”, the fold line image is formed so as to become invisible after a first period elapses from a first time point at which the fold line image is formed on the paper. In the “second manner”, the fold line image is formed so as not to become invisible even after a second period elapses from the first time point. The second period is longer than the first period.