Image reading apparatus including multi-crop function

An image reading apparatus including: an original reading unit configured to scan at least one original placed on an original table and read an image of the original; an original size detection unit configured to detect a size of an original to be scanned before the scan; and a control unit configured to determine an area from which an image is to be read by the original reading unit by referring to the original size detected by the original size detection unit, wherein the control unit is capable of initiating a multi-crop process in which the original reading unit scans a plurality of originals placed on the original table in batch as a batch-scan and crops an image of each of the originals, and in case of the batch-scan, the control unit determines the maximum area readable by the original reading unit as a reading-area.