Universal Viewer (ATViewer) is an advanced file viewer with wide range of formats supported. 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...
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

Program Information Category: Tools and Utilities Type: Free Version: 2.2.0 Size: 1.2MB Works on: Windows Product page: here