You have PS? Then you can do a batch action. You can record yourself doing the process for one image, then have PS automatically do it for all the images in a folder.
Here’s one site that has info about setting this up. You can google for “batch processing photoshop” to find more instructions.
With all the photos having different aspects, it could be tricky, but I know this can be done programatically so I can’t see why you couldn’t reproduce it via the GUI. It may be tough, certainly, but with enough effort you could figure it out. Then again, with enough effort you can do them all manually too. Such is life.