Added documentation of howto add HEIF/HEIC support

content/docs/client/_index.md

@@ -7,6 +7,6 @@ categories:
 - network
 ---
 # Operating system
-I'm currently using Kubuntu 20.10 as my workstation operating system.
+I'm currently using Kubuntu 22.04 LTS as my workstation operating system.
 
 How I configured particular parts of it can be found in the subsections.

content/docs/client/qt_heic_support.md

@@ -0,0 +1,33 @@
+---
+title: QT/KDE Application HEIF/HEIC image format support
+#descriptions: empty description
+#summary: empty summary
+#weight: 2
+categories:
+- Photography
+tags:
+- HEIF/HEIC
+- Photos
+---
+
+# Add HEIF/HEIC support to Kubuntu 22.04
+
+Besides my DSLR I also use an iPhone 24 Pro for photography. The native image format of the iPhones is HEIF/HEIC. However, Kubuntu 22.04 LTS does not support HEIF/HEIC image format out-of-the-box.
+
+## QT/KDE applications
+
+There exists a good plugin that must be installed from source code to enable format support for all Qt/KDE applications [qt-heic-image-plugin](https://github.com/novomesk/qt-heic-image-plugin). Besides what is noted in the tools [README.md](https://github.com/novomesk/qt-heic-image-plugin/blob/main/README.md), you must also install the relevant dependencies:
+```shell
+$ apt install \
+    build-essential \
+    cmake extra-cmake-modules \
+    libheif1 libheif-dev
+```
+And then proceed with the tool documentation.
+
+## GTK Applications
+
+To also enable support for GTK based applications also install:
+```shell
+$ apt install heif-gdk-pixbuf heif-thumbnailer
+```