Convert gig to pnm Online: gig2pnm
You can use Tom's Editor to easily convert images from
.GIG to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
is an image format with extension GIG.
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.