PHoto bATCH Processor & Renamer
Phatch enables you to resize, rotate, mirror, apply watermarks, shadows, rounded courners, perspective, … to any photo collection easily with a single mouse click. You can arrange your own action lists and write plugins with PIL.
Phatch can rename or copy images based on any EXIF or IPTC tag. In combination with pyexiv2 Phatch can also save EXIF and IPTC metadata.
Phatch has a wxPython GUI, but can also run as a console application on servers.