52
27
I've got some documents in DjVu which I'll like convert to PDF. Is there a way to do this using command line OSS tools?
52
27
I've got some documents in DjVu which I'll like convert to PDF. Is there a way to do this using command line OSS tools?
43
djvu2pdf should fit the bill, it's a small script that makes use of the djvulibre toolset. If not, there are other methods that require multiple command-line tools.
27
The ddjvu
program, (which is part of the standard djvulibre
package), will do this:
$ ddjvu -format=pdf -quality=85 -verbose a.djvu a.pdf
Warning: this produces large files (but PDF files made by Christoph Sieghart's script are of the same size.)
I also wrote the following small bash
script some years ago.
It does the same automatically. (Save this as djvu2pdf.sh
).
#!/bin/bash
# convert DjVu -> PDF
# usage: djvu2pdf.sh <file.djvu>
i="$1"
echo "------------ converting $i to PDF ----------------";
o="`basename $i .djvu`"
o="$o".pdf
echo "[ writing output to $o ] "
cmd="ddjvu -format=pdf -quality=85 -verbose $i $o "
$cmd
The djvu2pdf
script by Christoph Sieghart does essentially the same
2Is there a way to make OCR layer of the DjVu come through into the PDF? – Geremia – 2017-02-25T04:09:56.467
21
What about simply using DJView and export as PDF?
Look at http://art.ubuntuforums.org/showthread.php?t=1232038
The question was about using command line only, so this can be automated. – Maxim – 2019-05-19T17:40:54.560
3This is the better and easier solution, thanks! – woohoo – 2012-03-04T02:56:33.137
10
If you don't care about colors and images you can get much smaller files if you drop the colors and use instead:
ddjvu -format=pdf -mode=black
input.djvu output.pdf
Texts, codes and formulas looks perfectly, but most of the images are gone
8
$ djvups input.djvu | ps2pdf - output.pdf
In my case the output file was 10x smaller than with ddjvu. Both djvups
and ps2pdf
present in ubuntu repository.
$ sudo apt-get install djvulibre-bin ghostscript
I've found this method in man ddjvu
, so always read manuals ;)
An alternate way to produce PDF file consists in first using djvups(1) and convert the resulting PostScript file to PDF. Which method gives better results depends on the contents of the DJVU file and on the capabilities of the PS to PDF converter.
1+1 for preserving any text layer in the djvu file – Plasma – 2018-04-01T18:29:35.677
2
I've changed the @Maxim script a little ...
#!/bin/bash
# convert DjVu -> PDF
# usage: djvu2pdf.sh [-q quality | -b] <infile.djvu> [outfile.pdf]
mode='color'
quality=80
aparse() {
while [ $# != 0 ] ; do
case "$1" in
-q|--quality)
quality=${2}
shift
;;
-b|--black)
mode='black'
;;
esac
shift
done
}
aparse "$@"
i="$1"
o=${2:-$(basename $i .djvu).pdf}
if [ -f "$o" ]; then
echo "file $o exists, override [Y/n]?"
read ans
case "$ans" in
n|N) exit 1;;
esac
fi
echo "[ converting $i to $o ] "
cmd="ddjvu -format=pdf -quality=$quality -mode=$mode -verbose $i $o "
echo "[ executing $cmd ] "
$cmd
1
For MacOS users you can install djvu2pdf like this:
$brew install djvu2pdf
How to use it(works for any Xnix like system):
$djvu2pdf nameBook.djvu nameBookToCreate.pdf
On mac you
– Ioannis Filippidis – 2014-07-02T07:59:31.717djvu2pdf
is available viaMacPorts
.What's a pity that, currently there is not djvu2pdf tool in Arch repo and old ver in Arch User repo
– Grzegorz Wierzowiecki – 2011-11-02T17:42:14.950Installing
djvulibre-bin
using apt-get and then installing the deb file in that link did the trick. – thameera – 2014-04-21T10:27:46.593