Add file(s) - Alt+A
Add folder - Alt+F
Remove selected file(s) - Delete
Remove all files - Alt+E
Select all - Ctrl+A
Effects - Ctrl+E
Zoom - Ctrl+Mouse Wheel
Resize - Ctrl+R
Preview selected image - Alt+V
Print - Ctrl+P
Convert file(s) - F3
Options - Ctrl+O
Exit program - Alt+F4
Close preview window - Esc
Help documentation - F1