How to convert DjVu image into pdf?

[panchparmeshthi]

@martin_helm

Open yast and search for djvulibre, then for the 3 packages listed above
choose in the version tab to change it to the version from the oss
repository (this is number 12 with name repo-oss in your list).
Do this for all three and accept that they will be reinstalled, I guess

How do I do that particular thing? If you can elaborate more simply, thanks. (Know its silly me! Thanks.

[martin_helm]

Do it from the command line it is difficult for me to explain what to
click on gui screens where I do not see how they look like on your machine.

su - #type your password for root after that
zypper in -f -r 12 libdjvulibre21 djvulibre-djview4 djvulibre

–
PC: oS 11.4 x86_64 | Intel Core i7-2600@3.40GHz | 16GB | KDE 4.6.0 |
GeForce GT 420
Eee PC 1201n: oS 12.1 x86_64 | Intel Atom 330@1.60GHz | 3GB | KDE 4.8.0
| nVidia ION
eCAFE 800: oS 12.1 i586 | AMD Geode LX 800@500MHz | 512MB | KDE 3.5.10 |
xf86-video-geode

[panchparmeshthi]

@martin_helm

su - #type your password for root after that
zypper in -f -r 12 libdjvulibre21 djvulibre-djview4 djvulibre

Okay now it works, did exactly like this. Thanks.

[panchparmeshthi]

Hi,

And similarly if I need to convert back to pdf (from djvu), how can I do that? I know that djvu is more compressed and thus occupying less of the memory and a good format, in fact I liked it. So after bifurcating the pdfs, I am trying back to convert the same small files into djvu formats.

Thanks.

[martin_helm]

From pdf to djvu you can use a command line tool (in your special case
make sure it is from repository 12 to be consistent)

sudo zypper install -r 12 pdf2djvu

From djvu to pdf simply select the appropriate entry in the file menu of
djview.

–
PC: oS 11.4 x86_64 | Intel Core i7-2600@3.40GHz | 16GB | KDE 4.6.0 |
GeForce GT 420
Eee PC 1201n: oS 12.1 x86_64 | Intel Atom 330@1.60GHz | 3GB | KDE 4.8.0
| nVidia ION
eCAFE 800: oS 12.1 i586 | AMD Geode LX 800@500MHz | 512MB | KDE 3.5.10 |
xf86-video-geode

[panchparmeshthi]

@martin_helm

From pdf to djvu you can use a command line tool (in your special case
make sure it is from repository 12 to be consistent)

sudo zypper install -r 12 pdf2djvu

Well when I run this command, it showed me the error that this package is not in the repo (may be due its version or ‘12’ in the command), so finally I installed it from Yast, it might however, now create some issue I guess (due to my especial case of version(s)’ conflict, hope not). But how do I use this particular command line tool?

@martin_helm

From djvu to pdf simply select the appropriate entry in the file menu of
djview.

And in this there is no problem now, rather it seems easy.

Thanks.

[martin_helm]

Am 07.03.2012 18:26, schrieb happy21:
>
> Well when I run this command, it showed me the error that this package
> is not in the repo (may be due its version or ‘12’ in the command), so
> finally I installed it from Yast, it might however, now create some
> issue I guess (due to my especial case of version(s)’ conflict, hope
> not). But how do I use this particular command line tool?
>
I forgot I updated my system meanwhile, so now it is in the oss repo in
12.1 and yours is 11.4, so ignore that, you have it.

pdf2djvu myoriginalpdf.pdf -o myconverteddjvufile.djvu

if your version of the command works the same as mine.
More info with

pdf2djvu --help
man pdf2djvu

–
PC: oS 11.4 x86_64 | Intel Core i7-2600@3.40GHz | 16GB | KDE 4.6.0 |
GeForce GT 420
Eee PC 1201n: oS 12.1 x86_64 | Intel Atom 330@1.60GHz | 3GB | KDE 4.8.1
| nVidia ION
eCAFE 800: oS 12.1 i586 | AMD Geode LX 800@500MHz | 512MB | KDE 3.5.10 |
xf86-video-geode

[panchparmeshthi]

@martin_helm

I forgot I updated my system meanwhile, so now it is in the oss repo in
12.1 and yours is 11.4, so ignore that, you have it.

I really forgot to tell you that I am using 11.4, though not a problem now.

@martin_helm

pdf2djvu myoriginalpdf.pdf -o myconverteddjvufile.djvu

Thanks, this single command is sufficient for me to have the files I need.

@martin_helm

if your version of the command works the same as mine.
More info with

pdf2djvu --help
man pdf2djvu

Okay, I see…

Thanks.

[panchparmeshthi]

@martin_helm

pdf2djvu myoriginalpdf.pdf -o myconverteddjvufile.djvu

The only thing in this conversion is that it takes a little more time (as compared with the exact reverse process), doing page by page, like a PDF of 300 pages takes time to get compressed, though works.

Thanks.

[robin_listas]

On 2012-03-07 21:06, happy21 wrote:
> The only thing in this conversion is that it takes a little more time
> (as compared with the exact reverse process), doing page by page, like a
> PDF of 300 pages takes time to get compressed, though works.
>

djvu creation creation is very much cpu intensive, the reverse is not. You
might optimize somewhat by compiling for your exact model of cpu. A tiny
bit

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)

[panchparmeshthi]

@robin_listas

djvu creation creation is very much cpu intensive, the reverse is not.

Oh I see.

Thanks.

[user]

The easiest way of converting image to pdfis to apply specific image sdk, have a try.

[user]

Try this PRO image coverter .Image conversion Pro is mature and reliable image conversion application software, which convert large amount of images at fast speed. Image Conversion Pro supports more than 30 image formats, like PDF, TIFF, GIF, JEPG and more.

[user]

@happy21

Hi,

I have a file with the extension .djvu (don’t know about it), but how can I convert the same into PDF?

Thanks.

You can try to this pdf convertor](C# PDF Converter Library: How to create, convert, save PDF to other file formats in C#.net. Free download),maybe this will be effective for you .

[user]

To convert your image into PDF document, an image converting SDK is necessary. It supports image to PDF conversion in an easy way and a detailed guide is offered on this page.

[panchparmeshthi]

Its typical to first learn VB.NET for this purpose! Directly using a GUI seems easy for end users!

[foodmore]

long time ago, i downloaded this image converting package. not sure whether it can convert DjVu image to pdf. any idea?
have you guys used it yet.

[thebasheersj]

Using online tools can done the job easily for you. I suggest picking a tool from the list shared in this post post of online djvu to pdf converters.