STDU Viewer is a free viewer for multiple file formats. 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, DCX and image (BMP, PCX, JPEG, GIF, PNG, WMF, EMF, PSD) files. Also STDU Viewer has some extended features, such as: exporting a page or part of a page into an image file, creating your own bookmarks, setting an action for tap screen and some else others.
If a document supports text layer (TXT, TCR, PDB, FB2, PDF, XPS, MOBI, AZW or Djvu file), then STDU Viewer helps you export text from this type of documents to a file. You can export all text from document or text from some selected pages. You can use STDU Viewer as a converter from DjVu and PDF files to a set of image files (BMP, GIF, PNG etc) which represent pages of a source document.
STDU Viewer is provided as freeware for private non-commercial or educational use. For commercial use, it is necessary to register.