Altarsoft PDF Reader vs SumatraPDF

Altarsoft PDF Reader

Description: Altarsoft PDF Reader is a free, open-source PDF viewer for Windows. It provides basic PDF viewing, printing and annotation features in a lightweight program.

Type: software

Pricing: Open Source

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.

Type: software

Pricing: Open Source

Altarsoft PDF Reader Features

• View PDF files
• Print PDF files
• Annotate PDF files
• Copy text from PDF files
• Search text in PDF files

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

Altarsoft PDF Reader

• Open Source

SumatraPDF

• Open Source