Convert viff to pnm Online: viff2pnm

You can use Tom's Editor to easily convert images from
Khoros Visualization Image .VIFF to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

VIFF

Khoros Visualization Image is an image format with extension VIFF.

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.