Convert mlt to pnm Online: mlt2pnm
You can use Tom's Editor to easily convert images from
MLT .MLT to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
MLT is an image format with extension MLT.
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.