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CODE4LIB  April 2013

CODE4LIB April 2013

Subject:

Re: tiff2pdf, then back to pdf?

From:

"Edward M. Corrado" <[log in to unmask]>

Reply-To:

Code for Libraries <[log in to unmask]>

Date:

Fri, 26 Apr 2013 17:54:35 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (131 lines)

On Fri, Apr 26, 2013 at 5:29 PM, Ethan Gruber <[log in to unmask]> wrote:

> What's your use case in this scenario? Do you want to provide access to the
> PDFs over the web or are you using them as your archival format?  You
> probably don't want to use PDF to achieve both objectives.
>



The problem I have is I have multipage TIFF files and I don't currently
have a good way for users to view them. I also need to preserve these
files. Ideally my use case would be to use PDF files created from the TIFFs
for both preservation and an archival format. But, as I said, that depends
on if I can recreate the original tiff. I have the option of creating a
custom viewer that can deal with the the display of the tiff files, but I'm
looking for other options.

So I have a few choices that I thought of implementing (that I haven't
ruled out):

1) This is what I asked about. Make a PDF from the TIFF files. If I could
embed the tiff into a pdf, and then at some point recreate the tiff if
needed for archival purposes, I have my solution.

2) Convert the multipage TIFF files to individual TIFF files. This would
work for my endusers, but would be more clunky than a PDF for them. The new
TIFF fiels could be my archival copy.

3) Convert the multipage TIFF files to PDF (probably in a smaller,
compressed? state), use the PDF for display/access, save the TIFF for
archival purposes.

4) Convert the multipage TIFFs to PDF (or PDF/A?), and donít worry about
being able to recreate the original TIFF files.

I should add, the content is what is important in these documents and they
are mostly type written or hand written text. Still, I'd like to keep them
in as high quality of a format as possible.

I'm sure there are some other possible solutions as well. I really would
like #1, but it may not be possible. If it isn't, I need to decide (with
representatives of my user community) which of the others are better. My
guess is it would be #3, but I am not positive.

Edward






>
> Ethan
> On Apr 26, 2013 5:11 PM, "Edward M. Corrado" <[log in to unmask]> wrote:
>
> > This works sometimes. Well, it does give me a new tiff file from the pdf
> > all of the time, but it is not always anywhere near the same size as the
> > original tiff. My guess is that maybe there is a flag or somethign that
> > woulf help. Here is what I get with one fil:
> >
> >
> > ecorrado@ecorrado:~/Desktop/test$ convert -compress none A001a.tif
> > A001a.pdf
> > ecorrado@ecorrado:~/Desktop/test$ convert -compress none A001a.pdf
> > A001b.tif
> > ecorrado@ecorrado:~/Desktop/test$ ls -al
> > total 361056
> > drwxrwxr-x 2 ecorrado ecorrado     4096 Apr 26 17:07 .
> > drwxr-xr-x 7 ecorrado ecorrado    20480 Apr 26 16:54 ..
> > -rw-rw-r-- 1 ecorrado ecorrado 38497046 Apr 26 17:07 A001a.pdf
> > -rw-r--r-- 1 ecorrado ecorrado 38178650 Apr 26 17:07 A001a.tif
> > -rw-rw-r-- 1 ecorrado ecorrado  5871196 Apr 26 17:07 A001b.tif
> >
> >
> > In this case, the two tif files should be the same size. They are not
> even
> > close. Maybe there is a flag to convert (besides compress) that I can
> use.
> > FWIW: I tried three files/ 2 are like this. The other one, the resulting
> > tiff is the same size as the original.
> >
> > Edward
> >
> >
> >
> >
> >
> > On Fri, Apr 26, 2013 at 4:25 PM, Aaron Addison <
> [log in to unmask]
> > >wrote:
> >
> > > Imagemagick's convert will do it both ways.
> > >
> > > convert a.tiff b.pdf
> > > convert b.pdf a.tiff
> > >
> > > If the pdf is more than one page, the tiff will be a multipage tiff.
> > >
> > > Aaron
> > >
> > > --
> > > Aaron Addison
> > > Unix Administrator
> > > W. E. B. Du Bois Library UMass Amherst
> > > 413 577 2104
> > >
> > >
> > >
> > > On Fri, 2013-04-26 at 16:08 -0400, Edward M. Corrado wrote:
> > > > Hi All,
> > > >
> > > > I have a need to batch convert many TIFF images to PDF. I'd then like
> > to
> > > be
> > > > able to discard the TIFF images, but I can only do that if I can
> create
> > > the
> > > > original TIFF again from the PDF. Is this possible? If so, using what
> > > tools
> > > > and how?
> > > >
> > > > tiff2pdf seems like a possible solution, but I can't find a
> > corresponding
> > > > "pdf2tif" program that reverses the process.
> > > >
> > > > Any ideas?
> > > >
> > > > Edward
> > >
> >
>

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