Photoshop batch process, cut image in half, save each half?

A workaround involving two runs of Batch for example seems possible but a better approach would, in my opinion, involve Scripting.

Photoshop Scripting

You could set up an action using the Divide function of the slice tool to half the images, but saving to separate folders would require a script.

Although not as nice as a script, simply being pragmatic and performing the split in two batches would be done “in minutes” (apart from run time, just the mechanics of setting this up)…where as the scripting route will likely take hours/days/weeks/months depending on various factors (finding a suitable script, relying on other’s good will in writing a script, learning scripting, writing and debugging and testing etc). Although I am very much into best practice, I also favour the practical route.

EDIT: I'll go through the steps shortly.

Presuming left/right hand side crops (the idea is of course the same for top/bottom crops too)…

OK, the action is simple, here is a screenshot:

To record the canvas resize/crop, I recorded the following:

This is to crop off the right hand side, retaining the left. Notice how relative % is used, not an absolute pixel or other value and that the anchor point is set to the left rather than the centre. This of course presumes that the width is even and can be perfectly cropped in half.

The action contains both the left and right crops, which are then referenced in two separate batch runs:

And here is the result:

P.S. And PLEASE make sure that on a real job that you DO SAVE A FILENAME EXTENSION in your Batch settings, unlike above (that’s what I get for doing this late at the end of a long week!)