Converting native PDF to image

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weesiong
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Converting native PDF to image

Post by weesiong » 2013-11-12T23:51:14-07:00

Hi,

I am trying to convert a PDF file with user signed electronic signature using signing pad in it to a image format PDF extension file,
The reason is that the existing batch program ( which I have not control over) is unable to process the electronics signature in the native PDF

The command I used -
convert -density 300 input.pdf output.pdf

The issue is after the conversion , the signature portion looks very bad , even I when I am setting a density of 300
which is already taking a lot of processing time and disk space

Any advise how to overcome this ? e.g what parameter to use , etc

snibgo
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Re: Converting native PDF to image

Post by snibgo » 2013-11-13T00:37:13-07:00

I don't understand why you want to create a PDF from another PDF.

What does "very bad" mean?

Is the input multi-page with the signature on only one?

Can you put the PDF somewhere like dropbox.com and paste the URL here?
snibgo's IM pages: im.snibgo.com

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whugemann
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Re: Converting native PDF to image

Post by whugemann » 2013-11-13T08:37:10-07:00

Are you sure that the signature is a raster image in the original document? It could also be a vector format, say a glyph in a dedicated font file containing the signatures of all employees. This would cause detoriation when being converted to a raster image.
Wolfgang Hugemann

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