A facsimile apparatus includes a document size detecting unit, a first image data generating unit, a size acquiring unit, a size comparing unit, a second image data generating unit, an image data transmitting unit, and a first transmission result outputting unit. The document size detecting unit detects a first size of a first document. The first image data generating unit generates first image data based on a first image on the first document. The size acquiring unit acquires a second size of a second document that can be received by a reception-side apparatus. The size comparing unit compares the first size with the second size. The second image data generating unit generates second image data for forming a second image on the second document from the first image data based on a comparing result of the size comparing unit. The image data transmitting unit transmits the second image data to the reception-side apparatus. The first transmission result outputting unit outputs exclusively a transmission result indicating a result of transmission of the second image data to the reception-side apparatus.