STDU Viewer is a compact viewer for PDF, WWF

WWF (file format)

WWF is a modification of the open standard PDF format for document exchange endorsed by the World Wide Fund for Nature Germany. The WWF format is promoted as being more environmentally friendly than other comparable document exchange formats since documents in this format are designed to be more...

, DjVu

DjVu

DjVu is a computer file format designed primarily to store scanned documents, especially those containing a combination of text, line drawings, and photographs. It uses technologies such as image layer separation of text and background/images, progressive loading, arithmetic coding, and lossy...

, Comic Book Archive (CBR or CBZ), FB2, XPS

XML Paper Specification

Open XML Paper Specification , is an open specification for a page description language and a fixed-document format originally developed by Microsoft as XML Paper Specification that was later standardized by Ecma International as international standard ECMA-388...

, TCR, multi-page TIFF, TXT

Text file

A text file is a kind of computer file that is structured as a sequence of lines of electronic text. A text file exists within a computer file system...

, PalmDoc (PDB

PDB (Palm OS)

PDB is a container format for record databases in Palm OS, Garnet OS and Access Linux Platform. Its structure is similar to PRC resource databases...

), EMF

Windows Metafile

Windows Metafile is a graphics file format on Microsoft Windows systems, originally designed in the 1990s. Windows Metafiles are intended to be portable between applications and may contain both vector graphics and bitmap components....

, WMF

Windows Metafile

Windows Metafile is a graphics file format on Microsoft Windows systems, originally designed in the 1990s. Windows Metafiles are intended to be portable between applications and may contain both vector graphics and bitmap components....

, BMP, GIF

GIF

The Graphics Interchange Format is a bitmap image format that was introduced by CompuServe in 1987 and has since come into widespread usage on the World Wide Web due to its wide support and portability....

, JPG, JPEG

JPEG

In computing, JPEG . The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality....

, PNG, PSD, PCX

PCX

PCX is an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia. It was the native file format for PC Paintbrush and became one of the first widely accepted DOS imaging standards, although it has since been succeeded by more sophisticated image formats, such as GIF,...

, DCX

PCX

PCX is an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia. It was the native file format for PC Paintbrush and became one of the first widely accepted DOS imaging standards, although it has since been succeeded by more sophisticated image formats, such as GIF,...

 files. It works under Microsoft Windows, and it's free

Freeware

Freeware is computer software that is available for use at no cost or for an optional fee, but usually with one or more restricted usage rights. Freeware is in contrast to commercial software, which is typically sold for profit, but might be distributed for a business or commercial purpose in the...

 for non-commercial usage.

Features

STDU Viewer has a tabbed document interface, it displays thumbnails of pages, it can create users' bookmarks, make color adjustments and change text settings. The program supports three types of search algorithms and all the search results can be displayed in a list.

The rotation to 90 degrees option is useful for the portrait orientation

Page orientation

Page orientation is the way in which a rectangular page is oriented for normal viewing. The two most common types of orientation are portrait and landscape...

 of monitors. The opened document pages can be exported to text or image.

Versions history

The first version of STDU Viewer was the version 1.0.60, released the 13th of September, 2007. The program supported only PDF (including hyperlinks embedded), DjVu and TIFF formats.

The Unicode

Unicode

Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems...

 characters have been supported since the version 1.0.76. The Print document function first became available in the version 1.4.7.

Critical reception

STDU Viewer was appreciated for its feature to read a wide range of ebook formats and can be considered as a replacement to Adobe’s reader

Adobe Acrobat

Adobe Acrobat is a family of application software developed by Adobe Systems to view, create, manipulate, print and manage files in Portable Document Format . All members of the family, except Adobe Reader , are commercial software, while the latter is available as freeware and can be downloaded...

.

STDU Viewer was included in the list of top 50 freeware of 2009 and best software for students.

The program doesn't support online help

Online help

Online help is topic-oriented, procedural or reference information delivered through computer software. It is a form of user assistance. Most online help is designed to give assistance in the use of a software application or operating system, but can also be used to present information on a broad...

 CHM files, LIT, DOC

DOC (computing)

In computing, DOC or doc is a filename extension for word processing documents; most commonly for Microsoft Word. Historically, the extension was used for documentation in plain-text format, particularly of programs or computer hardware, on a wide range of operating systems...

, ePUB

EPUB

EPUB is a free and open e-book standard by the International Digital Publishing Forum...

 and HTML

HTML

HyperText Markup Language is the predominant markup language for web pages. HTML elements are the basic building-blocks of webpages....

. When printing PDF document, a large temporary file is created, so the printing process is slow.

See also

• List of PDF software
• Comparison of image viewers
  Comparison of image viewers
  This article presents a comparison of image viewers and image organizers which can be used for image viewing.-General information:Note 1: Adobe Bridge comes included in the price with the Adobe Creative Suite CS2, Adobe Production Studio and Photoshop Elements 4 for Mac OS X...
  
  
• List of portable software