Convert ipt to pnm Online: ipt2pnm

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

Go to Tom's Editor

IPT

Interpaint Multicolor is an image format with extension IPT.

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.