Bug #315 - Pagestream mac save pdf does not shrink bitmaps
Product:PageStream (MacOSX)Reported By:Ernest Unrau
Severity:NormalAssigned To:Deron Kazmaier
Priority:Average sign in to watch (2 are watching)
Status:Fixed in 18:05:38
Category:File OperationsUpdated:2010-10-30 18:05:38
Summary:Pagestream mac save pdf does not shrink bitmaps
Keywords:pdf shrink bitmaps
Attached Files:No files attached.
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Pagestream Mac demo

Bug: option to shrink bitmaps is not working when saving as pdf.
* 9.6 MB size of Pagestream document with embedded 200 dpi TIFF color image.
* 12.3 MB size of saved pdf document saved from Pagestream with settings: shrink bitmaps turned on, max dpi 150, resize to 100 dpi, all fonts embedded.
* 565 kb size of aforementioned pdf file, loaded into Mac Preview, saved again with custom filter reducing bitmaps to 100 dpi.


T.J. Zweers wrote...2010-10-31 08:00:58

What are you trying to say? That you can shrink a pdf from PGS even better in another program?

Well I've seen this, but not as drastically as you have. I've seen half of its (PGS->pdf)size.
I am not sure if that is only because of the less dpi bitmaps.
In Adobes Acrobat there is an option: Save as: Adobe PDF-files optimized (*.pdf), which does this.

So, is it a bug?


Ernest Unrau wrote...2010-10-31 21:51:08

Yes it's a bug. I'm not saying another program can shrink it better. Just that Pagestream is not shrinking the bitmaps at all, even though I had it turned on. So the setting doesn't work. Compare the sizes of the files I listed. The saved pdf file is larger than the original Pagestream document. Now look at the small size of the same pdf file, after I loaded the 12.3 MB pdf file into Preview, then saved it out with a filter set to reduce the bitmap image to 100 dpi. Quite the difference, wouldn't you say?


Deron Kazmaier wrote...2010-12-21 23:59:22

I did finally figure this out. If you scaled/resized the picture in PageStream, it gets confused. Leave it at 100% and this option worked correctly.

[Status updated to 'Fixed in' on Tue, 21 Dec 2010 23:59:22 -0500]

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Bug #315 - Pagestream mac save pdf does not shrink bitmaps by Ernest Unrau   pdf shrink bitmaps
  created:2010-10-30 18:05:38   last updated:2010-10-30 18:05:38
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