A shredder for feeding documents from a document loading portion to a document shredding portion so as to shred the documents by the document shredding portion, in which the document loading portion is constituted by a plurality of document loading apertures such that a total quantity of the documents capable of being fed from the document loading apertures to the document shredding portion is so set as to be not more than a shredding capability of the document shredding portion.
