Can FastStone Photo Resizer be added?
http://www.faststone.org/FSResizerDetail.htm
Since, FastStone Photo Viewer is added as well.
This software is extremely handy for mass converting pictures to other formats, water marking, mass resizing, mass renaming... It's a very underrated tool imo.
It is now in the poll and will be added soon to Patch My PC, make sure to vote for it
https://patchmypc.net/vote-for-new-apps