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

Convert file(s) - F3

Options - Ctrl+O

Exit program - Alt+F4

Close preview window - Esc

Help documentation - F1