Implemented view modes and corresponding file formats are:
- Text, Binary, Hex, Unicode: any files, of unlimited size (even 4Gb+ sizes are allowed)
- RTF, UTF-8: RTF and UTF-8 encoded texts
- Image: all general graphics formats: BMP JPG GIF PNG TGA TIFF... plus all formats supported by IrfanView/XnView external viewers
- Multimedia: all formats supported by MS Windows Media Player: AVI MPG WMV MP3...
- Internet: all formats supported by MS Internet Explorer: HTML XML DOC XLS...
- Plugins: all formats supported by Total Commander Lister plugins

Generally, Universal Viewer is an application similar to Total Commander Lister. But, comparing to Lister, it has some major advantages:
- Full support for Unicode filenames
- Built-in functions of several popular plugins: images, multimedia, webpages view
- Support for multiple codepages: ANSI, OEM, EBCDIC, ISO, KOI8, Mac etc.
- Toolbar, status bar, other interface improvements
- Auto-reloading of file on changing, "Follow tail" option
- Displaying of line numbers
- Displaying of non-printable characters
- Combined Unicode/Hex mode (call Unicode mode twice)
- More modern RegEx search library
- Print preview
- EXIF viewer