STDU Viewer
STDU Viewer is a free portable software used to open and view various file types like PDFs, images, Microsoft Office documents, emails, archives, EPUB books and more. It supports viewing over 20 file formats and includes features like tabbed browsing, thumbnail previews, bookmark
pdf
images
office-documents
email
epub
tabbed-browsing
annotations
STDU Viewer: Portable Software for Opening Various File Types
A free software with support for over 20 file formats, including PDFs, images, Office documents, emails, archives, EPUB books, and more, featuring tabbed browsing, thumbnail previews, bookmarks, and annotations.
What is STDU Viewer?
STDU Viewer is a free, open-source and portable universal file viewer that allows users to easily view over 20 different file formats, including PDF, Microsoft Office documents, images, emails, multimedia files, ebook formats and more.
Some of the key features of STDU Viewer include:
- Tabbed interface for opening multiple files
- Thumbnails and outline previews
- Bookmarking and annotations
- Slideshows for images and PDFs
- Basic editing for txt, rtf and CSV files
- Portable app requiring no installation
- Small size with low memory footprint
- Supports many languages and custom skins
STDU Viewer opens PDFs, various image formats like JPG and TIFF, Microsoft Word docs, Excel sheets, PowerPoint presentations and more. It can display Outlook emails and files archived in ZIP, RAR, 7Z and other compressed formats. Ebooks in EPUB, MOBI and FB2 formats are also supported.
Useful features available in STDU Viewer include thumbnail previews, bookmarks to easily navigate in large documents, slideshow mode for images and PDFs, basic annotations like highlighting and notes. It also allows copying images and text snippets to clipboard.
As it is portable, STDU Viewer does not need to be installed on the computer and leaves no traces after closing. It works offline once downloaded and runs on Windows platform. The small size and low memory requirement allows it to open even large files quickly.
STDU Viewer is free to use, even commercially. The open-source code is available for developers. Languages like English, Russian, German, French and more are supported along with custom skins to change its look.
In summary, STDU Viewer is an excellent file viewer to open most document and media files in different formats. It is light-weight, customizable and easy to use for both basic and power users.
STDU Viewer Features
Features
- Supports viewing over 20 file formats including PDF, images, Office documents, emails, archives, EPUB books
- Tabbed browsing for opening multiple files
- Thumbnail previews
- Bookmarks and annotations
- Portable software - no installation required
- Lightweight and fast
Pricing
- Free
- Open Source
Pros
Free and open source
Clean and intuitive interface
Good format support
Useful viewing features like tabs, thumbnails, bookmarks
Portable so can take it anywhere
Light on system resources
Cons
Limited editing capabilities
Less features than full featured PDF editors
UI could be more modern
No cloud storage integration
Official Links
The Best STDU Viewer Alternatives
Top Office & Productivity and Document Viewers and other similar apps like STDU Viewer
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