Convert srf to pnm Online: srf2pnm

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

Go to Tom's Editor

SRF

SRF image is an image format with extension SRF.

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.