Hi, I am not sure I fully understand your question. Would it be possible for you to provide an example of what you mean by importing a PDF at a certain width?
Importing a PDF generally can either give you some Graphics that make up the PDF or some plain text for the text inside the PDF:
http://reference.wolfram.com/mathematica/ref/format/PDF.htmlAre you interested in turning the Graphics into a rasterized image at that is the same size as what the PDF viewer would give you? If so, can you provide a simple example?