Convert picon to pnm Online: picon2pnm

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

Go to Tom's Editor

PICON

Personal Icon is an image format with extension PICON.

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.