SumatraPDF vs STDU Viewer

Struggling to choose between SumatraPDF and STDU Viewer? Both products offer unique advantages, making it a tough decision.

SumatraPDF is a Office & Productivity solution with tags like pdf, ebook, reader, lightweight, opensource.

It boasts features such as Lightweight and fast PDF reader, Supports many document formats like PDF, ePub, MOBI, XPS, DjVu, CHM, CBZ, CBR, Customizable with themes, keyboard shortcuts, Tabbed document interface, Supports annotations and highlighting, Continuous scrolling, Supports reflowable text, Supports digital signatures, Supports comics book formats, Supports eBooks, Supports syncing open documents across devices and pros including Lightweight and fast, Supports many document formats, Free and open source, Customizable, Good support for comics and eBooks.

On the other hand, STDU Viewer is a Office & Productivity product tagged with pdf, images, office-documents, email, epub, tabbed-browsing, annotations.

Its standout features include 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, and it shines with pros like 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.

Feature	SumatraPDF	STDU Viewer
Overall Score	N/A	N/A
Primary Category	Office & Productivity	Office & Productivity

Product Overview

SumatraPDF

Description: SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.

STDU Viewer

Description: 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, bookmarks and annotations.

Key Features Comparison

SumatraPDF Features

• Lightweight and fast PDF reader
• Supports many document formats like PDF, ePub, MOBI, XPS, DjVu, CHM, CBZ, CBR
• Customizable with themes, keyboard shortcuts
• Tabbed document interface
• Supports annotations and highlighting
• Continuous scrolling
• Supports reflowable text
• Supports digital signatures
• Supports comics book formats
• Supports eBooks
• Supports syncing open documents across devices

STDU Viewer 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

Pros & Cons Analysis

SumatraPDF

Pros

• Lightweight and fast
• Supports many document formats
• Free and open source
• Customizable
• Good support for comics and eBooks

Cons

• Limited annotation features compared to advanced PDF editors
• Lacks OCR capabilities
• No cloud storage integration
• No mobile apps

STDU Viewer

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

Pricing Comparison

SumatraPDF

• Free
• Open Source

STDU Viewer

• Free
• Open Source