XnResize (and XnConvert/View) - Resize just canvas size (in cms)

[dec]

As i suspect many people would like to do, i want to resize the image CANVAS to a exact cm (or mm/in) size WITHOUT resizing the image

i can find the cm option (not just pixels); BUT even if I deselect keep proportions, it resizes the image as well as the canvas

Is there a way (even if not in XN apps), JUST to resize the canvas in cm?

[cday]

In XnView Classic, XnView MP and XnConvert it should be possible to resize the image canvas without changing the image pixcel dimensions using the Canvas resize options provided, the image DPI being adjusted as required...

You would like that option to be added to XnResize?