Export and scale down at the same time

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Export and scale down at the same time

Users mailing list
Hi again!

I'm currently working with a huge image, 19262×12825, and now when I
finished it I want to export it as jpeg. In the export dialogue, I can
easily change the quality, and since the image is maybe 95 % white I can
select a very low quality number and still keep a decent quality, but the
file size is still at least 5 MiB.
The high resolution is not necessary at all. The reason for having it in
the first place is that I scanned an A2 document with an A4 scanner four
times and put it together in GIMP and I used the scanner's highest
resolution; I figured it's best to have the best possible resolution to
work with and then scale it down as the last step of the process.
Anyway, to save it, scaled down to, I don't know, maybe 20 % or even 10, I
first need to scale down the whole file, then export and then undo the
down-scaling (or quit without saving), or is there an easier way? I wish
there was a scale option in the jpeg quality dialogue or in a separate
dialogue, but that doesn't seem to be the case.
Am I missing something?


Kind regards

Johnny Rosenberg
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Re: Export and scale down at the same time

Users mailing list
I agree that a scale option in the export menu would certainly be handy,
but it comes with its own set of problems - like which type of scaling
algorithm to use?  The different algorithms may produce different results
depending on what is being exported - so I _think_ it may be smarter to try
the one that makes sense for your particular image, then export and
undo/not-save.

Not sure if this has been requested as a feature or not, but if not it
might be worth asking.

On Sat, Nov 17, 2018 at 2:21 PM Johnny Rosenberg via gimp-user-list <
[hidden email]> wrote:

> Hi again!
>
> I'm currently working with a huge image, 19262×12825, and now when I
> finished it I want to export it as jpeg. In the export dialogue, I can
> easily change the quality, and since the image is maybe 95 % white I can
> select a very low quality number and still keep a decent quality, but the
> file size is still at least 5 MiB.
> The high resolution is not necessary at all. The reason for having it in
> the first place is that I scanned an A2 document with an A4 scanner four
> times and put it together in GIMP and I used the scanner's highest
> resolution; I figured it's best to have the best possible resolution to
> work with and then scale it down as the last step of the process.
> Anyway, to save it, scaled down to, I don't know, maybe 20 % or even 10, I
> first need to scale down the whole file, then export and then undo the
> down-scaling (or quit without saving), or is there an easier way? I wish
> there was a scale option in the jpeg quality dialogue or in a separate
> dialogue, but that doesn't seem to be the case.
> Am I missing something?
>
>
> Kind regards
>
> Johnny Rosenberg
> _______________________________________________
> gimp-user-list mailing list
> List address:    [hidden email]
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> List archives:   https://mail.gnome.org/archives/gimp-user-list

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