Re: IBM says invalid Jpeg

[Jack Tucky <jacktucky@xxxxxxxxx>]

Thanks for the reply.  Here is the command we are using:

/QOpenSys/usr/local/bin/convert -compress none fromfile.png -set -units
PixelsPerInch -density 203 tofile.jpg

I'm downloading GIMP to look at the images.

Art

On Tue, Mar 14, 2017 at 2:32 PM, Hiebert, Chris <
chris.hiebert@xxxxxxxxxxxxxx> wrote:

> Paint does something different to the jpeg header.
> And Paint is able to open jpeg files that are not "strictly" windows jpegs
> and then update the jpeg header to what it believes is correct.
>
> What ghostscript command are you using to generate the jpeg image?
>
> I've used this command to create a jpeg from a PDF file:
>
> gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=jpeg -dTextAlphaBits=4
> -dGraphicsAlphaBits=4 -r300 -sOutputFile=/filepath/outputfile.jpg
> /filepath/filename.pdf
>
> You could try to create the image with gs. Then open it with paint and
> save it as a differing image.
> Then try to open both images with "gimp" GNU Image Manipulation Program.
> Then look at the image properties to see what is different.
> That might clue you in as to what options you need to pass to gs to fix
> the output.
>
> Chris Hiebert
> Senior Programmer/Analyst
> Disclaimer: Any views or opinions presented are solely those of the author
> and do not necessarily represent those of the company.
>
>
> -----Original Message-----
> From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
> Jack Tucky
> Sent: Friday, March 10, 2017 8:19 PM
> To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
> Subject: IBM says invalid Jpeg
>
> I'm on 7.3.  Trying to print some Jpeg's.  IBM says yeah they dont print,
> but if we open them in Paint and save them, they print fine.
>
> So where do I go now?  The Jpg's are converted from Png using Ghostscript.
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