Convert tn4 to pnm Online: tn42pnm

You can use Tom's Editor to easily convert images from
Tiny Stuff .TN4 to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

TN4

Tiny Stuff is an image format with extension TN4.

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.