.DPP File Extension
File TypeDrawPlus Drawing File
What is a DPP file?
Vector image saved in the native DrawPlus drawing format; supports CMYK color, 3D shapes, filter effects, text in a shape, and image feathering; DPP documents created with DrawPlus 7 or later may also include multiple pages.
Serif discontinued DrawPlus in 2015. The last version of the software was X8.