Sumatra PDF

Active

Country: Finland (FI)
Founded: 2006
Developer: Krzysztof Kowalczyk
Pricing: Free (open-source)
Open source: Yes
Platforms: Windows

Indexes

PDF Tools

Overview

Sumatra PDF is a lightweight document viewer for Windows that supports PDF, CHM, EPUB, MOBI, FB2, XPS, and PS files. It provides core reading functionalities such as fullscreen and presentation modes with minimal resource usage, suitable for users seeking a fast alternative to heavier readers like Adobe Reader.¹⁷

Key Features

Lightweight Design - Uses minimal system resources for quick startup and efficient performance.
Multi-format Support - Opens PDF, CHM, EPUB, MOBI, FB2, XPS, and PS documents.
Fullscreen Mode - Enables distraction-free reading and presentation viewing.
Presentation Mode - Supports remote/clicker functionality for slideshows.
Customizable Settings - Editable SumatraPDF-settings.txt file for advanced look and behavior adjustments.
Portable Version - Runs from executable directory without installation.
Default Reader Setup - Options to register as default PDF handler on Windows.

Pricing

Plan	Price	Includes
Free	$0	Full access to all features, no paid tiers.

Platforms & Requirements

Runs exclusively on Windows, including XP through 10 and later, with both installed and portable versions. No minimum requirements specified beyond standard Windows compatibility; settings stored in %APPDATA% or %LOCALAPPDATA% for installed versions.²⁴⁵

Integrations & Ecosystem

PDF files
CHM files
EPUB files
MOBI files
FB2 files
XPS files
PS files

Alternatives

App	Difference
Adobe Reader	Heavier resource usage with more editing features but slower performance.
Foxit Reader	Offers advanced annotations and editing, less emphasis on minimalism.
MuPDF	Command-line focused with even smaller footprint but fewer GUI features.

Reputation

Sumatra PDF is praised for its speed, low resource consumption, and simplicity, making it a popular choice for default PDF readers in institutional settings like classrooms.¹⁷ Users appreciate easy customization via settings files and reliable default association on Windows.³⁴ Criticisms include limited advanced editing capabilities and challenges setting as default on Windows 10 due to OS restrictions.⁶

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