STDU Viewer simplifies document viewing by supporting multiple formats in a single application. It replaces the need for multiple viewers and supports DjVu, TIFF, PDF, FB2, CBR, CBZ, XPS, TXT, and JBIG2 formats.

The software supports a range of relevant document formats including DjVu, TIFF, PDF, WWF, FB2, DCX, Comic Book Archive (CBR or CBZ), XPS, TXT, TCR, JBIG2, and PalmDoc(PDB).
For documents containing various sections, STDU Viewer allows for quick and easy navigation via content indexing.
Additionally, users can create personalized bookmarks and access specific sections of a document with ease.
The ability to select and copy both images and text is also included in the software, along with a search function to quickly find and locate specific words within a document.
Overall, STDU Viewer provides users with an efficient and versatile solution for managing a variety of document types with ease.
Version 1.5.635:
Fixed bug in DjVu file reader
Fixed some minor bugs
Version 1.5.621:
Add support of WWF documents
Improve speed of opening Comics Book
Fixed some minor bugs
Version 1.5.528:
Add some addtional options in context menu for selections
Add "send by mail" features
Add "Open in background tab" and "Open in new tab" command for links in document.
Add additional command line paramet
Version 1.5.449:
Update decoding JPEG2000 streams in PDF
Add "Windows" item in general menu
Improve print options
Fixed some minor bugs
Version 1.5.427: N/A
Version 1.5.424: N/A
Version 1.5.402: N/A
Version 1.5.382: N/A
Version 1.5.330: N/A
Version 1.5.326: N/A