Halftone is a free and open source image tool for Linux, Windows and MacOS. Using Halftone, you can create pixel art-like style images. You can also use this tool to compress images. It comes with floyd-steinberg, riemersma, bayer dither algorithm support, color changing, brightness, contrast, image resize, file format changing options. It is written in Python and released under GNU General Public License v3.0.
How to Install Halftone on Ubuntu
To install Halftone on your system, you need flatpak and flathub. If you don’t have then install flatpak and flathub on your system first and restart it after the installation. You can install flatpak using below two commands.
sudo apt install flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
After that open the terminal app and run below Halftone flatpak install command. It will install the latest version of Halftone on your system.
flatpak install flathub io.github.tfuxu.Halftone
Now you can open it using below command.
flatpak run io.github.tfuxu.Halftone
And also uninstall it using below commands.
flatpak uninstall io.github.tfuxu.Halftone
sudo flatpak uninstall io.github.tfuxu.Halftone