211136 Batch Image Crop on Server

Require coder to crop all thumbnails in a folder on our server to remove URL watermark at the bottom of image. Other option is to place overlay over old URL watermark with new watermark. Images are 128 x 188 JPEG thumbnails and need to be cropped to 128 x 170 and left in the same format and title. This is a one time update needed and prefer the coder use their tools or script to manipulate the images directly on our server. There are 1,000s of images in one folder.