pcd The .pcd extension is used by different applications of which the Kodak Photo CD Image format file is the primary format used by Kodak scanners. Other associations of this extension include Pure Component Data of ChemSep, Pokemon Wonder Card of Pokemon Nintendo DS and Point Cloud Data of PCL.
pcx The Picture Exchange file format, shortened PCX, with the .pcx filename extension is an image file format developed by ZSoft Corporation. It was initially released in 1985 as a lossless bitmap image format and for a time was the default file format for PC paintbrush. The format is now largely superseded by other formats given the target platforms for the software associated with the format are no longer in production, i.e. MS DOS and Windows 1.0.