P2D is a file extension that is used by CAD software called PointLineCAD 2D. It is an application characterized by high efficiency. It was developed by Point Line CAD AG and is most often used in architectural structures, but also for the creation of other technical illustrations.

P2D is a file used to store 2D drawings made in PointLineCAD 2D. This allows such projects to be exchanged between users, as well as saving infinite works for later editing.