[Gimp-user] can't keep proportions

thank you for the help, much appreciated.
this will cause the border to look uneven however, isn't there a work around to
also, it's not clear to me why 400 x 200 and 420 x 220 is not keeping aspect
ratio? the vertical increases exactly the same amount of the horizontal....

If you add the same number of pixels to both the width and the height
the aspect ratio will change UNLESS the image is square (height =
width) - this is a simple consequence of basic arithmetic.

If you want the aspect ratio to be unaltered you will need to add more
pixels on the shortest sides of the image than you do on the longest
sides - how may more being determined by the aspect ratio of the
original image.

For example if the image was 400 x 200 pixels adding a 10 pixel border
to all sides would give 420 x 220 - which alters the aspect ratio.
Adding 10 pixels each side and 5 pixels top and bottom gives 420 x 210
which preserves the aspect ratio.

Mattia (via www.gimpusers.com/forums)

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