Hello! I want to change the splash screento my own.
When I click on the “Get new” button and then click “Contribute your own”, the following picture pops up:
Please tell me how I can install my own image on the splash screen
Please tell me how I can install my own image on the splash screen
You can’t…
as easily as select your preferred image and go.
You can find, as a example to work from. the breeze splash screen at:
/usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/splash/
with the image(s) inside the images directory and the placing and other definition things inside the Splash.qml file, but I would not guarantee that you can’t break KDE from starting with randomly playing around with that file, handle with caution!
Not sure if there is a official Guide / Howto somewhere, the only thing a quick google found is a “change the logo size” customisation howto.
Personally I would not consider it worth the hassle because that splash screen appears for just a second between SDDM and the Desktop, blink and you will miss it, but if someone knows a more sufficikated guide feel free to do so.
Thanks for the answer.
Looking through the files, I found that the preview for the Splash screen animation with the name Breeze is in the file: /usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/previews/splash.png
I looked at a lot of files, but I didn’t find anything similar to animation
Animated as well 
Maybe you can use this
as a example how to do it (or simply replace the fish.gif with your own animated gif).
Not tried myself, though.
I finally figured it out. I rewrote the code in the Splash.qml file, as you said in the first answer
And I uploaded my background with my company logo here
And in general, now I basically understand how to create this
It turned out cool
It turned out that .qml is very similar to CSS and JS
Thanks for the advice
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