Okay, So using Kubuntu/KDE Plasma 5.13, I can obviously change colors, add panels and do a lot of personalization stuff that I really like. But what I am really interested in is changing the transparency/translucency of the panel. I can't do it via settings/(any other GUI stuff) obviously. Is there any kind of tweak (editing configuration files, etc.), coz I know it's possible as they create translucent/transparent themes. How is this done?

3 Answers 3


From what I know, you cannot edit any config file to do so, but rather have to change the background image of the panel to something that is transparent (i.e. an SVG file that is transparent)

  • I can use Illustrator to do it. Where does the file reside? Jun 19, 2018 at 19:55
  • github.com/psifidotos/plasma-transparent-panel This is a github project that actually looks like it creates panel transparency through a python script. This (in hindsight) might actually prove more useful to you! Jun 19, 2018 at 20:00
  • Great, thanks a lot! I may have to disable some things, but I will give it a shot! Jun 19, 2018 at 20:04
  • Hi, it's possible by setting the appropriate opacity via Window Management > Window Rules > New > Window Type > Panel (dock) and then clicking on the Appearance and Fixes tab and setting your Active opacity/Inactive opacity.
    – DK Bose
    Dec 25, 2019 at 12:14

Breeze AlphaBlack

AlphaBlack Control - https://store.kde.org/p/1237963/

A simple widget to control the desktop theme's accent color, panel opacity, and the style of the taskbar's window buttons. Requires: Breeze AlphaBlack v10+ (https://store.kde.org/p/1084931/)


Update: there is a transparency panel button widget that is available under "Get new widgets" option.

Once added, select "Edit Panel", then close the main options

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Then use the button

enter image description here

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