Convert orf to pnm Online: orf2pnm

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

Go to Tom's Editor

ORF

Olympus Digital Camera Raw Image File is an image format with extension ORF.

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.