A printing device includes a recording portion performing recording on a medium; a discharge tray loading the medium recorded; a first detector configured to detect the medium of a first load capacity loaded on the discharge tray; a second detector configured to detect the medium of a second load capacity smaller than the first load capacity loaded on the discharge tray; a mounting portion on which an optional device is mounted; and a controller controlling the recording by the recording portion, in which the optional device mounted on the mounting portion is positioned above the discharge tray, the first detector and the second detector are positioned below the optional device mounted on the mounting portion, and when the first detector detects the medium of the first load capacity in a non-mounted case in which the optional device is not mounted, the controller executes full load processing.