Safety device for preventing injury by shielding body parts from a gap between a door and a door frame including a one-piece protective sheet having a plurality of flaps each extending over only a portion of the height of the sheet and which are foldable about one another. The sheet is partitioned by transverse fold lines or bends extending between the lateral edges of the sheet on one side of the sheet. The flaps are connected to one another on an opposite side of the sheet and thus pivotable with respect to one another to enable the sheet to fold into a compact form for shipping and storage regardless of the vertical height of the device. Attachment mechanisms attach lateral edge portions of the sheet to the door and door frame.