Image Resizer

[Cleo]

You can make droplets in Photoshop and then just drop your images on them. Actually ImageReady also makes droplets and I find them easier to work with and make then then ones from Photoshop. Photoshop also has a "Make Web Gallery" that will place the full size images on html. THis is good for doing galleries for member's areas in paysites.

I use iwatermark mostly to batch copyright my images but you can also have it resize your images at the same time.
http://scriptsoftware.com/iwatermark/