Convert hci to pnm Online: hci2pnm

You can use Tom's Editor to easily convert images from
HCI, HR2 .HCI to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

HCI

HCI, HR2 is an image format with extension HCI.

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.