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Posted by Bill Segraves on 07/23/07 21:25
<femtox77@gmail.com> wrote in message
news:1185204380.330805.101900@r34g2000hsd.googlegroups.com...
> Hi to all!!!
>
> I'm trying to convert a pdf file into an image, for example JPG or PNG
> format, with ImageMagick.
You could also use the online version at
http://redux.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi.
> I use the command line. For example: convert
> header.pdf header.jpg. But I obtain a bad result. The jpg's quality is
> very low. Why? I tried to use - quality 100 option but there isn't
> improvement. I think also that this option isn't active for the pdf
> conversion to an image format or not? I need some good ideas :D...
ImageMagick cannot improve the quality of an image embedded in a PDF.
When the PDF was created, the resolution of the embedded image was
established by Acrobat (if Acrobat was used to create it), probably via a
default setting in Distiller that causes the image to be downsampled to an
appropriate setting for web/screen viewing, i.e., 72 dpi for Acrobat
(Distiller) 3.
--
Bill Segraves
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