Convert eci to pnm Online: eci2pnm

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

Go to Tom's Editor

ECI

ECI Graphic Editor is an image format with extension ECI.

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.