If the other method didn't work, I think that I once used GIMP to
convert a PNG to a PDF. It's worth a try.

Even so, assuming that you can convert each PNG to a PDF, I can
recommend this command line program (PDF tool kit....aka pdftk) for
gluing together many individual PDFs into one PDF. I was using it on a
Windows machine, but it seems like it comes also with Mac installer, and
possibly Linux may have a package.

If you are going to use it, read their example page, and possibly their
man page, first.
Not that hard to set up and get going.

http://www.pdflabs.com/tools/pdftk-server/

If there is better free alternative out there for Linux (or
cross-platform), please let me know. :-)

-- Nicholas

On 12/12/13 12:00 PM, tclug-list-request at mn-linux.org wrote:
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> Today's Topics:
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>    1. Best way to convert a folder of png files into a pdf?
>       (Michael Moore)
>    2. Re: Best way to convert a folder of png files into a	pdf?
>       (Josh More)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 12 Dec 2013 10:04:02 -0600
> From: Michael Moore <stuporglue at gmail.com>
> To: TCLUG Mailing List <tclug-list at mn-linux.org>
> Subject: [tclug-list] Best way to convert a folder of png files into a
> 	pdf?
> Message-ID:
> 	<CAFE18KX=q29s3FZ2T8NZrTyhHAcRJteHM5hHNAK0EShtNY9vJA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> I've got a folder of png files that I want to turn into a multi-page pdf
> with letter-sized pages.
>
> I'm currently trying to use imagemagick, but the resulting PDF is smaller
> than it should be. I've posted a message on ImageMagick's forums,[1] but
> I'm wondering if I'm not just using the wrong tool in the first place.
>
> Does anyone have a better tool to be using for this?
>
> Thanks,
> Michael Moore
>
>
> [1] http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=24633
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> ------------------------------
>
> Message: 2
> Date: Thu, 12 Dec 2013 10:08:49 -0600
> From: Josh More <jmore at starmind.org>
> To: TCLUG Mailing List <tclug-list at mn-linux.org>
> Subject: Re: [tclug-list] Best way to convert a folder of png files
> 	into a	pdf?
> Message-ID:
> 	<CAB3GUt8-RSQCff0UTf=e6j-NidNJmzG312HZzeMPe8bE_=yMFQ at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> You need to do it in two steps:
>
> convert *.png test.mng
> convert test.mng test.pdf
>
> This is how I did my security comic book.  The only gotcha is to check the
> page order with an "ls *.png" first.  I had to preface each file with the
> pagenumber (00 - 24) to get them in the right order.
>
> -Josh
>
>
>
> On Thu, Dec 12, 2013 at 10:04 AM, Michael Moore <stuporglue at gmail.com>wrote:
>
>> I've got a folder of png files that I want to turn into a multi-page pdf
>> with letter-sized pages.
>>
>> I'm currently trying to use imagemagick, but the resulting PDF is smaller
>> than it should be. I've posted a message on ImageMagick's forums,[1] but
>> I'm wondering if I'm not just using the wrong tool in the first place.
>>
>> Does anyone have a better tool to be using for this?
>>
>> Thanks,
>> Michael Moore
>>
>>
>> [1] http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=24633
>>
>> _______________________________________________
>> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
>> tclug-list at mn-linux.org
>> http://mailman.mn-linux.org/mailman/listinfo/tclug-list
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>>
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> End of tclug-list Digest, Vol 108, Issue 14
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