[scribus] pdf file size once more

John Ghormley KJ4UFG kj4ufg at sera.org
Sun Apr 29 02:07:59 UTC 2012

I know this is a much hashed topic and I am not complaining, but rather
trying to understand the whys of if all.  I just submitted a 60 page
magazine pdf file to my pre-press folks.  They used InDesign to create a
press quality pdf for use in making negatives for the offset press.  (I
know, I know, that's old technology for a magazine but that is not the
issue here.)  The pdf file I wrote with Scribus was 527 mb in size.  That
was a greyscale option as opposed to printer or web.  The file written
using the printer option was 1.5 Gb in size.  Anyway, the file written for
the negative processing which was all 60 of my black and while pages after
imposition was 36mb.

The question is, of course, how can a 38 mb container hold all the data in
a 527 mb container?  Does InDesign use some compression technique that
Scribus does not?  If so, why not?  After all, an almost 14:1 compression
ratio is significant!

But, there may be a better explanation.  I just wish I knew it.

John Ghormley  KJ4UFG
Editor, SERA *Repeater Journal*
Walkertown, NC  USA
editor at sera.org
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