diff --git a/README.md b/README.md
index 750e1a2..56b5a2b 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,31 @@ Better throbber and decrypt field
 - copy to /usr/share/plymouth/themes/WindozeXP
 - chown -R root the folder
 - sudo plymouth-set-default-theme -R WindozeXP
+
+## conf
+
+See also: [Arch Wiki](https://wiki.archlinux.org/title/Plymouth)
+
+´´´
+/etc/plymouth/plymouthd.conf:
+
+...
+[Daemon]
+Theme=WindozeXP
+ShowDelay=1 //Add some delay to remove flicker
+DeviceScale=2 //Integer factor for scaling
+UseFirmwareBackground=true //Might be needed to show firmware logo with BGRT theme
+´´´
+
+### scaling
+The Logo Image is 640x480.
+Use the following integer factors on bigger screens:
+ - 480px-959px vertical height: 1
+   - 480, 600, 720, 768, 900
+ - 960px-1919px vertical height: 2
+   - 960, 1024, 1050, 1080, 1200, 1280, 1440, 1600
+ - 1920px-3839px vertical height: 3
+   - 2160, 2400
+ - 3840px-7679px vertical height: 4
+   - 4096, 4800
+ - ...
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