Convert cr2 to pnm Online: cr22pnm

You can use Tom's Editor to easily convert images from
Canon Digital Camera Raw Image .CR2 to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

CR2

Canon Digital Camera Raw Image is an image format with extension CR2.

PNM

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.