There are many ways within several programs to "shrink" your images for upload. If you find yourself going back in to your main program, such as PS, PSP, and tweaking the image size to whatever is required for various websites, it can gobble up your extra time.
So, if you need a way to batch procees several files, or need to resize a single image, you may want to try this program. I've been using it with excellent results.
PIXresizer is a photo resizing program to easily create web and e-mail friendly versions of your images with reduced file sizes.
* Simple Four-Step Workflow
* Easy 'Apply recommended' option to make it even more user friendly
* Works with single files as well as with multiple files all at once
* Option to convert between graphics formats (.bmp, .gif, .jpg, .png, and .tif)
* Can be used to create thumbnails (takes one move on a slider)
* Smart Ratio Calculation (image proportions can be overruled by the user)
* Error logging (checks for corrupted images a. o.)
http://bluefive.pair.com/pixresizer.htm
BlueFive Home http://bluefive.pair.com/index.html
You will also find some other neat free utilities here.