TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm using the Powerdot class to make a presentation. Powerdot uses eps pictures and thus on compiling, I'm using the normal route:

Latex > dvi > ps > pdf. 

In Ghostscript, we have the ps2pdf tool. I normally use


for all usage. I read somewhere that setting the /screen option instead of /prepress creates a smaller pdf file. For the presentation that I'm working on, I see that both settings give the same file size.

In any case, what's the best option to put for a presentation?

Am I right to think that setting the option to /prepress will create a file of high resolution that will make the presentation appear very well on a projector?

share|improve this question
up vote 1 down vote accepted

You can find all options of ps2pdf here. The PDFsettings part is below:

    Presets the "distiller parameters" to one of four predefined settings:

        * /screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
        * /ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
        * /printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
        * /prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.
        * /default selects output intended to be useful across a wide variety of uses, possibly at the expense of a larger output file. 

So in principle /screen will give the smallest output. It's already enough for a projector.

share|improve this answer
Thanks. Yes I have seen this from ps2pdf.htm. So u mean that /prepress will appear better than /screen on a projector? 1 vote up. – yCalleecharan Nov 29 '10 at 8:52
Because the typical resolution of a projector is 1024x768, the improvement on the file quality above this level is usually meaningless. – gerry Nov 29 '10 at 10:03
Thanks for your comment. – yCalleecharan Nov 29 '10 at 18:51

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.