pamrgbatopng
converts PAM images with alpha channel to PNG format, preserving transparency
TLDR
Convert RGBA PAM to PNG with transparency
$ pamrgbatopng [input.pam] > [output.png]
SYNOPSIS
pamrgbatopng [file]
DESCRIPTION
pamrgbatopng converts PAM images with alpha channel to PNG format, preserving transparency. Input must be RGBA PAM (4 channels). Part of Netpbm toolkit.
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