Convert hlf to pnm Online: hlf2pnm
You can use Tom's Editor to easily convert images from
Hires Interlace by Feniks .HLF to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Hires Interlace by Feniks is an image format with extension HLF.
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.