Chromium in kiosk mode on a small vertical display - given window width is extended

[Ralf Wirowski]

Hi,

I like to use chromium on a vertical wall panel (wonderful 11,9 inch Waveshare touchscreen 320×1480). So far everything looks fine, I am using the setup of  "A minimal kiosk mode for a Raspberry Pi | r0b blog" with the parameter  '--window-size=320,1480'. But the screen Chromium is using is larger as the given window size, so a lot "is displayed" right the screen.

I think its the same challenge if I want to resize a Chromium screen per mouse to less then appr. 450 pixels, it doesn't allow this.

Is there a way to overcome this problem with some additional command switches? Has someone a solution?

Many thanks in advance!

Ralf