For Photoresize command line.

Is it possible to resize by date? I have over 100,000 images. Scanning and skipping already exisisting files takes about an hour to complete. Is there any switch that will only search for images added on the same date the batch is run?

I am afraid there is no such switch. This is the first time I hear about PhotoResize being use in similar scenario.

You could create a batch file or windows script and use something like robocopy to move the files based on a certain date and recreate the folder structure to a temporary location, resize the photos there, then have it move them back when photoresize is done.