Re: How to automatically figuring out the optimal resolution for a pdf file?

> I did not know that Xpdf can extract the images from PDF losslessly.
> Hmmm the package does not even require the use of ghostscript!
> I wonder how it is processing PDF files?

We do it about once a day over here; it functions reliably. I don't know about the details, but PDF is ASCII-based. So you can even extract the streams yourself by opening the PDF in an ASCII editor, looking for a stream that you know to be, say, a JPEG and extract it. At http://www.unfallrekonstruktion.de/imagemagick/BMW.pdf  you'll find a PDF i have just generated.

You can extract the part between "stream" and "endstream" and save it as a JPEG -- it is a simple as this (at least on my Windows computer); I've just tried.

Wolfgang Hugemann