Thanks for the .xcf, Nothing controversial in the poster and I understand your wish to respect the artists rights.
Keeping the topic open, maybe more ideas coming or it might assist in the future.
I still think you need to ask the artist why the 1536 x 2048 pix @ 132 ppi dimensions. Which is not 'A' proportions
From that, exporting in Gimp to postscript I do get a one pixel white line at the very top. I put some index marks in the corner and you see that carries through to the pdf. (1) Is that a problem? If you send to a printer, bleed area takes care of that.
If you want no borders then try. Scale the image to 1546 x 2186, export to ps, accept the slightly oversize dimentions. You lose a pixel-and-a-half at the top (2) but there is no border and of course the original image is not exactly the same proportions.
I do remember posts in the past where ghostscript/pdf was very sensitive to pixel sizes, typically putting a border on the left of A4 pdf's.
Keeping the topic open, maybe more ideas coming or it might assist in the future.
I still think you need to ask the artist why the 1536 x 2048 pix @ 132 ppi dimensions. Which is not 'A' proportions
From that, exporting in Gimp to postscript I do get a one pixel white line at the very top. I put some index marks in the corner and you see that carries through to the pdf. (1) Is that a problem? If you send to a printer, bleed area takes care of that.
If you want no borders then try. Scale the image to 1546 x 2186, export to ps, accept the slightly oversize dimentions. You lose a pixel-and-a-half at the top (2) but there is no border and of course the original image is not exactly the same proportions.
I do remember posts in the past where ghostscript/pdf was very sensitive to pixel sizes, typically putting a border on the left of A4 pdf's.