What is kde-theme-installer?

KDE Store Theme Installer is a graphical desktop program that simplifies installing themes for the KDE Plasma desktop environment. When you find a theme on the KDE Store or Pling network, the tool takes that theme's web address, finds all the related pieces mentioned in its description, and installs them automatically. These companion pieces can include icon packs, color schemes, window decorations, and wallpapers. The tool handles the safe, well-understood components on its own, placing each file in the correct location on your system. The program works through a multi-step process. It starts by looking up the theme using the KDE Store's API, then scans the theme's description for links to additional content. Once it identifies everything, it downloads the files, checks them for integrity, and extracts them safely. Finally, it copies the content into the right folders on your computer. The graphical interface walks you through four screens: entering the theme URL, selecting what to install, watching the progress, and reviewing a summary of what was done. Not everything gets installed automatically. The tool downloads SDDM login screen themes and GTK themes but leaves their installation to you, because these require system-level permissions or manual steps. It also cannot handle fonts yet, as the developers have not found a theme that includes them. For SDDM themes specifically, the tool checks whether your system actually uses SDDM as its login manager before attempting any installation, since some Linux distributions use a different system. The project is described as complete and working. The developers tested it against real KDE Store data, successfully installing a theme with 21 companion pieces across 19 different content types. The repository includes the main source code, diagnostic scripts used during development to understand how the KDE Store's API works, and live tests that verify the installation process against the real store.