[PLUG] Graphic Format Quality

Christian Bewley christian at rocksolidservice.com
Wed Jul 26 15:53:37 UTC 2006


Rich,

What does the image look like when you print it? Does it look as crude 
as it is on the screen or is it a better quality?

<quote from http://www.prepressure.com/formats/eps/fileformat.htm >

EPS files can optionally contain a bitmapped image preview, so that 
systems that can't render PostScript directly can at least display a 
crude representation of what the graphic will look like.

There are 4 preview formats:

    * PICT, mainly used in files generated on Macs. The PICT file is
      stored in the resource fork of the EPS file, while the actual
      PostScript data are stored in the data fork. PICT is the default
      file format of QuickDraw, the graphics model that is used by all
      Mac applications to generate the screen display.
    * TIFF: Most EPS files created by Windows applications contain a
      TIFF file for preview purposes.
    * Metafile: Some EPS files originating on PC contain a Windows
      Metafile preview. WMF or Windows Metafile is the PC equivalent of
      the Macintosh PICT file format.
    * EPSI which is an EPS file with a platform device independent
      preview. EPSI is an all ASCII (no binary data or headers) version
      of EPS. EPSI provides for a hexadecimal encoded preview
      representation of the image that will be displayed or printed.
      EPSI files were documented by Adobe as a means of providing a
      preview for EPS files which would be cross-platform. In reality
      though DOS machines and Windows favour embedding TIFF or even
      Windows Metafiles in the PostScript. EPSI is mainly used on Unix
      systems.

</quote>



Rich Shepard wrote:
>   I have a small file (a logotype) using a specific typeface that I can
> create with OO.o or GIMP. Using OO.o I can save it as a .pdf file and the
> edges are sharp and smooth. If I run it through pdf2ps, the resulting
> PostScript file is of obviously lesser quality. Could this be due to the
> specs used by the two tools?
>
>   When I create it in the GIMP I can save it directly as an .eps file, 
> but
> again the quality is not as high as it could be. I don't know why.
>
>   This file is a logo that I want to use in the LaTeX templates for
> SQL-Ledger. Those files are compiled with latex, not pdflatex, so I 
> cannot
> use a .pdf file in them.
>
>   Have any of you graphics-oriented folks any thoughts about getting a
> high-quality .eps file I can use?
>
> Thanks,
>
> Rich
>




More information about the PLUG mailing list