On Sun, 1 May 2005 19:46:44 +0200
Stefan Frings <[EMAIL PROTECTED]> wrote:

> Hello,
> I like to optimize more than 100 photos (jpeg, 640x480) for web publishing. I 
> noticed thet the files are much smaller when I simply load and overwrite them 
> with gimp with very minor loss of quality.
> I woul dlike to do this with all my pictures in an automatic batch job. Ho 
> can 
> I do this?
> If there is another nice Linux program, then this would also be ok for me but 
> I assume that Gimp can do it - I assume that Gimp can do everything:-)

If you have imagemagick, you can do something like this

for img in `ls *.jpg`
          convert -sample 25%x25% $img thumb-$img

but read man convert as there are many options

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