Bug#675869: make PDF smaller with version1.4

[Hideki Yamane <henrich@debian.or.jp>]

Package: texlive-latex-extra-doc
Version: 2012.20120529-1
Severity: wishlist

Hi,

 I got a advice from Munehiro Yamamoto (TeX package maintainer in VineLinux)
 to reduce PDF file size in TeX related package. It's just using pdfwrite
 device in GS to down its pdf level to 1.4.


----------------------------------------------------------------------------
how to
----------------------------------------------------------------------------

 I wrote temporary script as compress.sh, to exec gs like this,

>     gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dNOPAUSE -dQUIET -dBATCH \
>     -sOutputFile=$i.output $i && echo "$i"

 It re-Distiller pdf files to PDF1.4 via GS's pdfwrite, its script consumes 
 15 min in my box.

> real	15m36.362s
> user	15m4.020s
> sys	0m17.365s



----------------------------------------------------------------------------
result
----------------------------------------------------------------------------
$ du -h *xz
279M	data.tar.xz
245M	usr.orig.tar.xz
145M	usr.tar.xz

  279MB -> 245MB (best xz compression, reduce 30MB as Bug#)
  279MB -> 145MB (re-Distiller + best xz compression =130MB!)

 I think that's worth to try it :)
 And I've filed this to texlive-latex-extra-doc, however it may be applied to
 other packages.


-- 
Regards,

 Hideki Yamane     henrich @ debian.or.jp/org
 http://wiki.debian.org/HidekiYamane

#! /bin/sh 

set -e

if [ ! -f tmpname ]; then
  find ./usr/ -name *.pdf -type f -print >tmpname
fi

for i in `cat exclude.list`
do
    sed s%$i%% -i tmpname
done

for i in `cat tmpname`
do
    gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dNOPAUSE -dQUIET -dBATCH \
    -sOutputFile=$i.output $i && echo "$i"
done

for i in `cat tmpname`
do
  mv $i.output $i
done

rm tmpname