The actual print size on paper is smaller
I have an image inside of a4 document that should be printsd 2"x8" 300
The image is pasted to the a4 as a layer from another gimp document
that was ser to "2X8". When I print the a4 document with the image
embedded- the image is smaller then 2"x8" - I measured it with a
ruler. Why is that and how I can fix it?
Just a reminder that Gimp is a raster editor and works in pixels not inches or centimetres although it can display such.
Page printing is quite a common problem and a lot depends on your printer.
I will have to use a linux setup for example, no suitable Windows installation - sorry.
Even laser printers require a small margin - usually 3mm, inkjet printers sometimes even more, might need a bottom margin of 10mm to push the paper through.
The A4 page is not truncated it is shrunk to fit. see: screenshot 1 The imposed margins increase the print resolution above 300 ppi. The whole page including your image shrinks.
With luck your printer driver will have a 100% option to force the full size, if not you can crop the page by a small amount. Do not guess the crop, use the tool options settings. see: screenshot 2 Used an offset of 3mm, 3mm - the top left corner of the crop and an overall size of 203mm x 208mm
Putting that to print and with luck 203mm x 208mm will permit a print resolution of 300 ppi and your graphic correct size. see: screenshot 3