Re: PDF File Alteration

["Dan Downs" <retnuh@xxxxxxxxxx>]

> I have some PDF files of what apparently were PowerPoint (a registered
trademark
> of the Microsoft corporation) presentations.  I can convert each of these
pages
> to a PBM with "pdftopbm" (output OK, but not great),  and I can also open
them
> in GIMP (something I discovered by accidently openning the PDF instead of
the
> PBM, and they look great).  What I need to do is plaster several PDF
files,
> images, text documents, etc... into one file that users can request be
printed
> on a B/W laser via a web form, whatever... (probably will turn it all back
into
> a PDF or Postscript file).  My dillema is that these PDFs look great on
the
> screen but print terrible as they are white letters on a pale blue graphic
> background.  I'm wondering if anyone knows of a way (command?) to remove
the
> background from a PDF?  I don't even know if PDFs store the background
seperate
> from the text, etc.... so maybe I'm grasping at straws.  If so, just whack
me.

Um, I know it can be done with CorelDraw 9, but it was the windows version,
I don't know about the linux version. I believe PDF files are more or less a
compressed EPS file with embedded fonts and maybe graphics. So one solution
may be to print to postscript and edit/merge the PS files. As for a good
editor of those, I'm at a loss, sorry.

Dan Downs