Fontmatrix 1.0.1

5 November 2026

Fontmatrix 1.0.1 is a packaging release. It adds an AppImage, tightens the Flatpak sandbox, and fixes icons that could not be seen on dark themes. Download it.

Where to get it

Flathub carries the current release again. Flathub had been stuck for six years on 0.9.100, the release from September 2020. It is now updated to 1.0.1, so flatpak install flathub com.github.fontmatrix.Fontmatrix gives you the same version as the release page.

Debian has it as well. Fontmatrix 1.0.1 is packaged in Debian unstable (sid) and testing (forky) as 1.0.1+ds-2, for amd64, arm64, armhf and i386. The Debian package page lists every suite.

Ubuntu lags behind. Ubuntu 26.10 (stonking) ships 0.11.0, from before the 1.0 series. It has several issues that later releases fixed, and none of the 1.0 work: no variable fonts, no colour fonts, no right-to-left text and none of the reworked font activation. Ubuntu 26.04 LTS (resolute) has no Fontmatrix package at all, and the two LTS releases before it, 24.04 and 22.04, are still on 0.9.100. The upcoming Ubuntu 27.04 (tenacious) has 1.0.1. Until it arrives, take the Flatpak from Flathub or the AppImage from the release page instead of the version in the archive.

New

• An AppImage for Linux. One file that runs on any distribution with glibc 2.34 or newer, built with KDE Craft the same way KDE builds its own AppImages. Every tagged release includes one from now on. It uses your system’s fontconfig, so a current /etc/fonts no longer produces a warning for every file. It has no Activate for all users option, because an AppImage cannot install the polkit helper that option needs.

Flatpak

• No access to your home folder. Files are opened and saved through the desktop’s file chooser. The only two places Fontmatrix can reach on its own are ~/.local/share/fonts, to activate fonts, and ~/.config/fontconfig, to hide system fonts.
• The runtime is KDE 6.11.
• The --own-name permission is gone. The single-instance D-Bus service now registers under the application ID, com.github.fontmatrix.Fontmatrix.
• CI checks the manifest and the built repository with flatpak-builder-lint.

Fixes

• Icons on dark themes. Outside Plasma (in the AppImage, on other desktops, on Windows and on macOS), icon themes such as Breeze or Gruvbox drew their icons dark on a dark background. Fontmatrix now recolours them to match your colour scheme, and uses your chosen widget style, as Plasma does.
• Colour schemes on KDE desktops without Plasma’s Qt integration. Your colours from kdeglobals are kept instead of being switched to Breeze Dark.

For packagers

There is one new required dependency: KF6 IconThemes (KF6::IconThemes).

The full release notes list every change.