- Basic lump management
- All the basic features you'd expect of a wad lump manager: Create/open/save wads, manipulate lump ordering, import/export lumps, etc.
- Full zip/pk3 support
- Can open, modify and save zip/pk3 files, including directory manipulation
- Tabbed interface
- The ability to open multiple wads in tabs can save a lot of time. You can even copy/paste lumps from one wadfile to another!
- Easy to use
- A simple, intuitive interface that is easy to learn and quick to use.
- Advanced text editor
- Syntax hilighting and autocomplete for various text lump types (ACS scripts, DECORATE, etc)
- Full PNG image support
- Including offset manipulation and high-colour support
- ACS Script support
- Compile ACS scripts from within SLumpEd
- Graphic conversion
- Convert between PNG/BMP/Doom Gfx/Doom Flat image formats