All kind of PostScript document can be converted to PDF format, mainly for printing purposes. The safest way to conversion special Photoshop PostScript documents (.pdp) would be to use Adobe Photoshop itself, to minimize the loss of data errors because of flawed file supported.
Convert Adobe Photoshop PostScript document file to Adobe Portable document format.
We have found 2 software records in our database eligible for .pdp to .pdf file format conversion.
Microsoft Windows software - convert pdp to pdf on Windows
One of the best bitmap graphic editing program
Convert from pdp file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned pdp to pdf. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert pdp to pdf on OS X
Mac version of popular digital image editor