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Resize Images on the commandline

Some examples, but you can do much more with convert then resize see man convert for more options

Resize images

 sudo apt-get install imagemagick
 find . -maxdepth 1 -iname "*.jpg" -print0 | xargs -0 -l -i convert -resize 1024x768 -quality 50 -strip {} /tmp/output/{}

Auto orientation

If you use ImmageMagick to make a fotoalbum or make a overview with thumbs you need to set the orientation first.

 cd /to/dir/with/fotos
 for i in *.JPG;do convert -auto-orient $i $i;done

Crop images

 convert image.jpg -gravity Center -crop 50% re_image.jpg

Nautilus

We can also use Nautilus extention which uses ImageMagick.

 sudo apt-get install nautilus-image-converter

Login out/in (or killall nautilus) to get the new options when right-click on a image in Nautilus Now you can resize or scale images with a mouse ;)

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