pnmtotiffcmyk
Convert PNM to CMYK TIFF for printing
TLDR
Convert PNM to CMYK TIFF
$ pnmtotiffcmyk [input.pnm] > [output.tiff]
Specify UCR percentage$ pnmtotiffcmyk -ucr [20] [input.pnm] > [output.tiff]
SYNOPSIS
pnmtotiffcmyk [options] [file]
DESCRIPTION
pnmtotiffcmyk converts PNM images to CMYK (Cyan, Magenta, Yellow, Key/Black) TIFF format for professional print production. It performs the RGB to CMYK color space conversion required by commercial printing processes.The -ucr (Under Color Removal) and -gcr (Gray Component Replacement) options control how the black channel is generated from the CMY components, affecting ink usage and print quality. Part of the Netpbm toolkit.
PARAMETERS
-ucr percent
Under color removal percentage.-gcr percent
Gray component replacement.
INSTALL
sudo apt install netpbm
sudo dnf install netpbm
sudo pacman -S netpbm
sudo apk add netpbm
sudo zypper install netpbm
brew install netpbm
nix profile install nixpkgs#netpbm