[gentoo-user] PDF to png/jpg/...

[gentoo-user] PDF to png/jpg/...

[meino.cramer]

Hi,

does anyone know a trick/package, which allows my to
convert the pages of a pdf file to images via the commandline 
(useable from a script).

I have a/LOT/ of datasheets of electronics and want to make
something like a "pdf gallery" to find pdfs faster...

Thanks a lot for any help in advance!
Kind regards,
Meino Cramer

-- 
Please don't send me any Word- or Powerpoint-Attachments
unless it's absolutely neccessary. - Send simply Text.
See http://www.gnu.org/philosophy/no-word-attachments.html
In a world without fences and walls nobody needs gates and windows.

Re: [gentoo-user] PDF to png/jpg/...

[Dale]

meino.cramer@gmx.de wrote:
> Hi,
>
> does anyone know a trick/package, which allows my to
> convert the pages of a pdf file to images via the commandline 
> (useable from a script).
>
> I have a/LOT/ of datasheets of electronics and want to make
> something like a "pdf gallery" to find pdfs faster...
>
> Thanks a lot for any help in advance!
> Kind regards,
> Meino Cramer
>
>   

This is not command line but at least it shows it can be done.  I got a
local store to scan some legal documents for me and they were in .pdf. 
I opened them with Gimp, yea, the picture program.  I could rotate them
so they would not give me or my lawyer a sore neck when reading them. 
They were sideways. 

I doubt Gimp has any command line options but I suspect that Gimp uses
some sort of a plugin to do this.  If you can find out what plugin it
uses, then you may can do it on command line.

Hope that info will bring forth much fruit.

Dale

:-)  :-) 

Re: [gentoo-user] PDF to png/jpg/...

[Florian Philipp]

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meino.cramer@gmx.de schrieb:
> Hi,
> 
> does anyone know a trick/package, which allows my to
> convert the pages of a pdf file to images via the commandline 
> (useable from a script).
> 
> I have a/LOT/ of datasheets of electronics and want to make
> something like a "pdf gallery" to find pdfs faster...
> 
> Thanks a lot for any help in advance!
> Kind regards,
> Meino Cramer
> 

You can use pdftopnm (app-text/poppler) to generate bitmap images from
your pdfs. Then you can use pnmtopng (media-libs/netpbm) to create pngs
from them. I suppose there are also tools for creating jpegs and such
alike but I haven't looked yet.

You will probably need some tweaking to get optimal results but the
process should be straight forward.

Make sure you have enough disk space spare. Those pnms can be quiet huge.


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Re: [gentoo-user] PDF to png/jpg/...

[meino.cramer]

Florian Philipp <lists@f_philipp.fastmail.net> [09-05-10 12:35]:
> meino.cramer@gmx.de schrieb:
> > Hi,
> > 
> > does anyone know a trick/package, which allows my to
> > convert the pages of a pdf file to images via the commandline 
> > (useable from a script).
> > 
> > I have a/LOT/ of datasheets of electronics and want to make
> > something like a "pdf gallery" to find pdfs faster...
> > 
> > Thanks a lot for any help in advance!
> > Kind regards,
> > Meino Cramer
> > 
> 
> You can use pdftopnm (app-text/poppler) to generate bitmap images from
> your pdfs. Then you can use pnmtopng (media-libs/netpbm) to create pngs
> from them. I suppose there are also tools for creating jpegs and such
> alike but I haven't looked yet.
> 
> You will probably need some tweaking to get optimal results but the
> process should be straight forward.
> 
> Make sure you have enough disk space spare. Those pnms can be quiet huge.
> 

Thanks a lot for all tipe!
I will use pdftoppm now.
Here is a quick script written on the commandline to do this job.
(I use zsh.)

mkdir PDFviews
cd PDFviews
for i in ../*.pdf ../*.PDF
do
fn=${i:r}
fn=${fn:t}
fn=${fn}.png
pdftoppm -f 1 -l 1 $i > tmp.ppm
ppmtojpeg < tmp.ppm > $fn
done
rm -f tmp.ppm

Have a nice sun(ny)day !
Meino


-- 
Please don't send me any Word- or Powerpoint-Attachments
unless it's absolutely neccessary. - Send simply Text.
See http://www.gnu.org/philosophy/no-word-attachments.html
In a world without fences and walls nobody needs gates and windows.

Re: [gentoo-user] PDF to png/jpg/...

[Cédric Cabessa]

Le dimanche 10 mai 2009 11:26:55, cramer a écrit :
> Hi,
>
> does anyone know a trick/package, which allows my to
> convert the pages of a pdf file to images via the commandline
> (useable from a script).
>
 imagemagick ?

$ convert myfile.pdf prefix.jpg

will create prefix-1.jpg, prefix-2.jpg, .... (one jpg by page)

$ convert myfile.pdf[10-15] prefix.jpg

if you want to extract only page 10 to 15.

--
ced

Re: [gentoo-user] PDF to png/jpg/...

[Paul Hartman]

On Sun, May 10, 2009 at 5:57 AM, Cédric Cabessa <ced@ryick.net> wrote:
> Le dimanche 10 mai 2009 11:26:55, cramer a écrit :
>> Hi,
>>
>> does anyone know a trick/package, which allows my to
>> convert the pages of a pdf file to images via the commandline
>> (useable from a script).
>>
>  imagemagick ?
>
> $ convert myfile.pdf prefix.jpg
>
> will create prefix-1.jpg, prefix-2.jpg, .... (one jpg by page)
>
> $ convert myfile.pdf[10-15] prefix.jpg
>
> if you want to extract only page 10 to 15.

I agree, that's what I use and it seems to work fine :)

Re: [gentoo-user] PDF to png/jpg/...

[Neil Bothwick]

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On Sun, 10 May 2009 12:30:43 +0200, Florian Philipp wrote:

> You can use pdftopnm (app-text/poppler) to generate bitmap images from
> your pdfs. Then you can use pnmtopng (media-libs/netpbm) to create pngs
> from them. I suppose there are also tools for creating jpegs and such
> alike but I haven't looked yet.

> Make sure you have enough disk space spare. Those pnms can be quiet
> huge.

Don't write them to disk then. Piping the output of pdftopnm into pnmtopng
will save disk space and speed up the process.


-- 
Neil Bothwick

Oregano: the ancient Italian art of pizza folding.

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