Can i resize some JPG images to smaller size, all at once? .. i mean I need a faster way, not doing 'em 1 by 1

Question

like resizing the file to its half .. like the 800x600 file become 400x300.

Answer 1

go to this link: http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx

Download the jpeg resizer. It works great and is easy to use

Answer 2

So easy to do on a unix system

mkdir smallimages; for file in *.jpg; do gm convert $file -geometry 400x300 smallimages/$file; done