Re: [Gimp-user] Multiple Resizing, Oval Cropping and Watermarking

[Steve Kinney <admin pilobilus net>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 09/28/2014 02:47 PM, Partha Bagchi wrote:
> Your distribution probably has imagemagick. Use imagemagick to
> batch convert and watermark.
>
> Take a look at this:
> http://www.imagemagick.org/Usage/annotating/

Yes to that:  imagemagick is the right tool for resizing lots of
images at once and/or adding watermarks to them.  Still, if you
are going to edit each image individually in the GIMP to get that
oval, it might be just as convenient to make the watermark on an
otherwise transparent layer, save that as a file of its own, and
drag+drop to add it to each image before saving.

In re cropping, I think what you probably want to do is make your
oval selection, and do Image > Crop To Selection.  That gives you
the rectangle.  Then do Select > Invert followed by Edit > Delete
to delete everything in the rectangle except your oval.

(The usual keyboard shortcut for invert selection is control+i,
for delete is control+x.)

You can choose the color of the "deleted" area by setting it as
the background color in your color selector tool, if the image /
layer  you are working on does not have an alpha channel. The
alpha channel in a layer or image enables transparency; with no
alpha channel, anything you delete will turn into the background
color.

If the image / layer you are working on has an alpha channel, you
will get a transparent background instead.  This is a frequently
used option for non-rectangular image content that will be
displayed on websites.

To add or remove the alpha channel from your image or layer, right
click on the thumbnail in the Layers dialog and select "Add alpha
channel" or "Remove alpha channel".  To preserve a transparent
background in your finished image, export the finished image in
PNG format.  Saving as JPG (for instance) will turn the
transparent areas into the background color that is set at the
time, as JPG does not support transparency.

:o)

Steve



-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)
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=lrRu
-----END PGP SIGNATURE-----