XnConvert development coming along fine. I don't have much need for a batch image converter but XnConvert would definitely come in handy for when I do.

Right, I wanted to leave these suggestions;
Ok, I realized the settings are stored in xnconvert.ini is in the Windows AppData folder. Just that I'm used to the ini being in the program folder.
1.) ...So There could be a window dialog prompt on first ever program launch to ask the user where settings can be saved, with the choice of these two "program folder (portable)" or "Installation (AppData folder)"
2.) Where is the 'Display' toggle button like what is seen in Xnview MP's browser?? I want to have the option to switch to a 'details' view in the file "Input" tab and not use thumbnails. Thumbnails is ok though.
3.) Where is the Windows 'minimize' button? Could this be added so that I can minimize XnConvert to the taskbar
4.) An option to minimize XnConvert to the system tray would be nice.
5.) I hope you plan on adding an "Options"/"Settings" tab - which would house lot's of program settings for a user to configure. For space on this window you could use sub-tabs.