Convert dpx to pnm Online: dpx2pnm
You can use Tom's Editor to easily convert images from
SMPTE Digital Moving Picture Exchange 2.0 .DPX to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
SMPTE Digital Moving Picture Exchange 2.0 is an image format with extension DPX.
PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.