ppmdither

Reduce the number of colors in an image by applying dithering. More information: <https://netpbm.sourceforge.net/doc/ppmdither.html>.

Install

All systems
curl cmd.cat/ppmdither.sh
Debian Debian
apt-get install netpbm
Ubuntu
apt-get install netpbm
Arch Arch Linux
pacman -S netpbm
image/svg+xml Kali Linux
apt-get install netpbm
CentOS
yum install netpbm-progs
Fedora
dnf install netpbm-progs
Windows (WSL2)
sudo apt-get update sudo apt-get install netpbm
OS X
brew install netpbm
Raspbian
apt-get install netpbm
Dockerfile
dockerfile.run/ppmdither

Reduce the number of colors in an image by applying dithering. More information: <https://netpbm.sourceforge.net/doc/ppmdither.html>.

  • Read a PPM image, apply dithering and save it to a file:
    ppmdither path/to/image.ppm > path/to/file.ppm
  • Specify the desired number of shades for each primary color:
    ppmdither -red 2 -green 3 -blue 2 path/to/image.ppm > path/to/file.ppm
  • Specify the dimensions of the dithering matrix:
    ppmdither -dim 2 path/to/image.ppm > path/to/file.ppm

© tl;dr; authors and contributors