@dleather: The script works also fine on InDesign/Photoshop CC.

I agree that you have to be aware of a giant downsampling. Especially when images contains patterns which can cause moiré, but most of the times the downsampling isn’t a problem.

You can only set ‘Bicubic’ or ‘Bicubic smoother/shaper’ in the script. But Photoshop CC does have some new methods for different types of resizing which are really great! So a script-update would be nice :-)