I've downloaded about 10 different cropper tools trying to find one that will work the way I want it too.. but I haven't been successful. all I'm wanting to do is to find a cropper tool that will crop from the bottom of each photo a certain amount of px.. say 20px off the bottom of it.. to all the photos in a folder. that's it. all the ones i've found that do work for mass cropping end up wanting to crop all the way around the photo not just from the bottom.. or they do a percentage of something and don't work correctly on photos that have different widths.. but really it should just be cropping the bottom of the photo and nothing else.
That seems like a rather advanced operation that would be hard to find in a free/shareware tool. Photoshop can do this fairly easily though - set up an action and apply a batch operation to it.
I've done something like this in powershell. If you are familiar with PoSh, then I can help you out. chris powershellblog.com
Thank the php script that you purchase not only can crop from the bottom, but also from left, right, and top.. Let me know if you get problem from my script