A sheet feeder includes a tray configured to load a sheet to be fed thereon. The tray has a tray upper face and a pair of cursors. The tray upper face has a recessed portion, a guide plate and a feeding route. The recessed portion extends along the width direction on an upstream side from the pair of cursors in the feeding direction. The guide plate is configured to cover an upper side of the recessed portion. The feeding route is formed between the recessed portion and the guide plate and extending from an inlet port positioned on an upstream side to an outlet port positioned on a downstream side along the feeding direction. The sheet in a state of being passed through the feeding route is aligned with the pair of cursors on the tray upper face and then fed.