(01-07-2024, 06:04 AM)TonyAimer Wrote: Thanks for your response.
I need to establish what resolution ACAD 2011 produces when it plots a pdf.
I am hoping that a pdf is therefore is then in raster format and will be OK in GIMP.
Tony
Really a PDF is a 'final' format. It is not meant for format exchange. As the acronym Portable Document, when composed of text and vectors it does not have a defined resolution, it will display small or large. Raster (bitmap) images do have a resolution, a scanned document for example where the scan resolution might be 100 ppi (low quality) or 300 ppi (high quality) and you will see difference in quality when you zoom in on a PDF. Just the same as scaling a small image in Gimp.
The PDF from CAD is a vector so does not have a defined resolution. It is up to you to make that definition when you import into Gimp. It used to default to 100 ppi leaving the user to increase as required, it seems Gimp 2.10.36 now defaults to 300 ppi which makes it less of a stumbling block for new users.
ACAD will be using real world units inches or millimetres. A simple calculation if you know the size of the logo.
Say you have drawn it 2 inches x 2 inches. You want it as a 300 x 300 pix image for YT 300 / 2 = 150 ppi
Import the PDF into Gimp and set the resolution in the import dialogue to 150