FILE | EDIT | VIEW | TOOLS | CREATE | WINDOW | INFO
There used to be an IMAGE item, and this is confirmed in the HELP documentation:
I checked OPTIONS and can't see anywhere I might have turned it off somehow...How To Increase or Reduce the Size of an Image:
• Open the image file.
• Choose the Menu item Image > Resize.
XnView version: 1.96.5
OS: Win7-64