Download

The current release is Fontmatrix 1.0.1. All files are on the release page on GitHub.

Linux

Flathub is the recommended way to install Fontmatrix. It carries the current release, and it updates along with the rest of your Flatpaks:

flatpak install flathub com.github.fontmatrix.Fontmatrix

Or install it from the Flathub page in your software centre.

Fontmatrix is sandboxed there: it opens and saves files through your desktop’s file chooser, and the only two places it reaches on its own are ~/.local/share/fonts, to activate fonts, and ~/.config/fontconfig, to hide system fonts.

AppImage. If you would rather not use Flatpak, download fontmatrix-1.0.1-linux-gcc-x86_64.AppImage from the release page, make it executable and run it:

chmod +x fontmatrix-1.0.1-linux-gcc-x86_64.AppImage
./fontmatrix-1.0.1-linux-gcc-x86_64.AppImage

It runs on any distribution with glibc 2.34 or newer. It has no Activate for all users option, because an AppImage cannot install the polkit helper that option needs.

Flatpak bundle. To install the same Flatpak without Flathub, download fontmatrix-1.0.1.flatpak from the release page and install it with:

flatpak install --user fontmatrix-1.0.1.flatpak

It needs the KDE runtime from Flathub, which flatpak offers to install.

Distributions. Debian unstable (sid) and testing (forky) carry 1.0.1 as fontmatrix; see the Debian package page. Ubuntu 26.10 still has 0.11.0, which predates the 1.0 series and has several issues fixed since, and 26.04 LTS has no package at all; on Ubuntu, use Flathub or the AppImage until 27.04 arrives with 1.0.1. Other distributions package Fontmatrix too; their version may be older.

Windows

Download fontmatrix-1.0.1-windows-cl-msvc2022-x86_64.exe (installer) or the .7z archive (no installation) from the release page. Each file has a .sha256 checksum next to it.

macOS

Fontmatrix is not built for macOS at present. The code still has the macOS parts, and contributors who want to bring it back are welcome.

From source

Fontmatrix needs Qt 6.8 or newer, KDE Frameworks 6.12 or newer, FreeType, HarfBuzz, zlib and libhyphen. PoDoFo (PDF font extraction) and Fontconfig are optional.

git clone https://github.com/fontmatrix/fontmatrix.git
cd fontmatrix
cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
ninja -C build
sudo ninja -C build install

See INSTALL.md for the details.