I have made, for personal use, a small JAVA program to automate the production of portrait files (basically, you load an image, either from disk or an http:// URL, select an area proportional to 210:330, and it will automatically create the xxL.bmp, xxM.bmp and xxS.bmp files). Hopefully it'll help at least another person...
Project page on GitHub - the source is packaged as an Eclipse/Maven project
current release - I'm reasonably sure this requires Java Standard Edition Runtime Environment, at least version 8:
http://www.oracle.co...view/index.html.
Edited by the bigg, 02 January 2016 - 03:14 PM.