STDU Viewer supports TIFF, PDF, DjVu, XPS, JBIG2, WWF document formats. These are the most popular formats for scientific and technical documentation.

Additionally STDU Viewer supports FB2, TXT, Comic Book Archive (CBR or CBZ), TCR, PalmDoc(PDB), MOBI, AZW, EPub, DCX and image (BMP, PCX, JPEG, GIF, PNG, WMF, EMF, PSD) files.

STDU Viewer has comes with a multilanguage interface. Currently you can choose from English, Russian or French languages. It is possible to translate STDU Viewer's interface into your language by changing strings in xml external resource. Learn more.