[sane-devel] ghostscript so much better with pdf files than xsane

Julien Michielsen julien at michkloo.xs4all.nl
Fri Nov 30 22:05:22 UTC 2007

The filesize of as pdf saved scans is enourmous: one page scans often
take more than 14 Mb of filespace. However, when reading a couple of
them with ghostscript, in order to make a multipage pdf-file of it, the
result shrinks to less than 15% of the original file:
-rw-r--r-- 1 julien users  1817720 Nov 27 23:31 07brbtot.pdf
-rw------- 1 julien users 14808071 Nov 27 17:48 07brb1.pdf
-rw------- 1 julien users 16691483 Nov 27 17:50 07brb2.pdf
-rw------- 1 julien users 13640821 Nov 27 23:30 07brb3.pdf

The first line (of 07brbtot.pdf) is the combination of the three pages

The command to create the combined file:

gs -q -sPAPERSIZE=a4 -dNOPAUSE -dBATCH -sDEVICE=pdfwrite
-sOutputFile=07brbtot.pdf 07brb1.pdf 07brb2.pdf 07brb3.pdf

Especially when sending pdf's bij mail it is usefull to have small scan-
files. Couldn't xsane incorporate a call to gs to reduce it's output?


Julien Michielsen

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