- autoresume
- rich command-line interfaced
- opening single image
- support for transparent pngs
- image properties window
- "split pages into 2" mode
- smooth scroll
- individual frame zooming + frames editor
- dosage support
- temporary directory setting
- docbook help/docs
- doxygen docs
- image zooming
- save Info window geometry
- character encoding option for Info window
- built-in decompression with third-party libraries
- unpacking of single files on the fly