An image reading apparatus having an automatic original document feeding apparatus that sequentially feeds plural original documents, which includes an original document reading section that reads an original document fed by the automatic original document feeding apparatus, an image data generation section that, on the basis of a reading output from the original document reading section, generates real image data and preview image data corresponding to the original document, and a display that, on the basis of the preview image data generated by the image data generation section, displays a preview image corresponding to the original document.