I have a bunch of small scripts for converting every page of a pdf
into an image, and then putting it back together into a pdf. The file
size obviously grows a LOT. Here is the relevant code.
-- begin mypdftojpg --
#!/bin/bash
f=$1
mkdir "$f"_imgs
i="1"
pc=`pdfinfo "$f" | grep Pages | cut -d ":" -f 2`
#echo Converting "$f"..
while [ $i -le $pc ]; do
pdftoppm -gray -r 280 -f $i "$f" | ppmtojpeg --quality=90 >
"$f"_imgs/$i.jpg
echo "100*$i/$pc" | bc
i=$[$i+1]
done
echo 100
-- end mypdftojpg --
Another script to convert jpegs into a pdf.
-- begin myjpgtopdf --
#!/bin/bash
f=`ls *jpg | sort -n `
pc=`ls *jpg | wc -l`
pc=$(($pc+1))
#mogrify -format pdf *jpg
c=0
for i in *jpg; do
c=$(($c + 1))
mogrify -format pdf "$i"
echo "100*$c/$pc" | bc
done
fp=`ls *pdf | grep -v out.pdf | sort -n `
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=out.pdf -dBATCH $fp
echo 100
-- end myjpgtopdf --
The above two scripts are invoked from another script which uses it like this..
-- calling script --
mypdftojpg "$1" | zenity --text "Printing progress: converting pages
to jpg" --progress --auto-close
cd "$1"_imgs
myjpgtopdf | zenity --text "Printing progress: converting jpg to pdf"
--progress --auto-close
-- end calling script --
Sharad
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