ppmtoppm
Normalize and copy PPM image format
TLDR
Copy and normalize PPM image
$ ppmtoppm [input.ppm] > [output.ppm]
SYNOPSIS
ppmtoppm [file]
DESCRIPTION
ppmtoppm copies PPM images while normalizing format. Functions as a pass-through filter. 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