Attached Link: http://www.irfanview.com

Irfanview can do anything through the GUI interface through command lines, eg:

Example for conversion:

i_view32.exe c:test.bmp /convert=c:test.jpg

Convert file: 'c:test.bmp' to 'c:test.jpg' without GUI.

i_view32.exe c:.jpg /convert=d:temp.gif

i_view32.exe c:.jpg /resample=(500,300) /convert=d:temp.png

i_view32.exe c:.jpg /resample=(500,300) /aspectratio /convert=d:temp.png

(Note: Supported are all IrfanView read/save formats except audio/video.)

Not sure if that's quite what you're looking for, but I've used it in the past when I didn't have enough RAM.

Come visit us at RenderGods.

Ignore the shooty dog thing.