From memory this will work to product thumbnails for all the .jpgs in the current directory:

for i in *.jpg; do djpeg -dct float -scale 1/8 $i | cjpeg -dct float>$i.thumb.jpg; done

djpeg and cjpeg are distributed with the JPEG group's libjpeg.

In reply to Re: Re: Re: Making jpg thumbnails by DrHyde
in thread Making jpg thumbnails by bradcathey

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