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Imagemagick: Batch resize images

Thomas Eisenbarth
September 15, 2012Software engineer at makandra GmbH

Trick: Do not use convert but mogrify:

mogrify -resize 50% *
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This overwrites the original image file.

In contrast, convert writes to a different image file. Here is an example if you need this:

cd /path/to/image/directory
for i in `ls -1 *jpg`; do convert -resize 50% $i "thumb_$i"; done
Posted by Thomas Eisenbarth to makandra dev (2012-09-15 15:18)