On Sat, 2005-04-02 at 15:26 -0800, Richard C. Steffens wrote:
> Is there a set of instructions for automating the task of scaling images?
> I have a large number of images that I want to scale to three different
> I successfully do this manually, and it doesn't take too long, but I'd like
> to find (or create -- but I can't imagine someone hasn't already done this) a
> script to run that will do this for me.
> I would point the Gimp to a directory containing links to images, and have
> script cycle through all the images, creating three copies of each image,
> each scaled to a different size and leaving them in that directory. To get
> even fancier, I'd save each size in a sub-directory.
> Thanks for helping a Gimp newbie.
ImageMagick is your friend here. It's specifically designed for just
the type of batch operations you're wanting. Check out
man ImageMagick for more details.
Basically you would write a quick shell script along these lines:
for $img in *.jpg
convert -size 800x800 -resize 800x800 $img $bigpix/$img_big.jpg
convert -size 640x640 -resize 640x640 $img $medpix/$img_med.jpg
convert -size 120x120 -resize 120x120 $img $thumbpix/$img_thumb.jpg
# end of bash script
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