Convert sif to pnm Online: sif2pnm

You can use Tom's Editor to easily convert images from
Super-IRG Font .SIF to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

SIF

Super-IRG Font is an image format with extension SIF.

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.