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SPECIFICTION
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SumatraPDF

sumatrapdfreader.org

Free plan Windows
Visit sumatrapdfreader.org
Spec score 7.7 #15 of 31 in File Viewer Software

What it is

SumatraPDF is a free, open-source Windows reader for PDFs, ebooks and comics. It opens PDF, EPUB, MOBI, CBZ, CBR, DjVu, XPS, CHM and common image formats. Document tools include annotation editing, form filling, signing, merging, splitting, extraction and conversion. The app supports text-to-speech, Windows UI Automation screen readers and keyboard-only use. Users can customize keyboard shortcuts, themes and toolbar layout. A portable edition runs without installation, including from a USB drive. Windows 7, 8, 10 and 11 are listed, with 32-bit, 64-bit and ARM64 builds. Documents and their names are not uploaded, although recently opened files remain in a local settings file. Update checks contact the maker’s server, and official builds send crash reports that may include document fragments. SumatraPDF has no OCR support and is not available for Mac or Linux.

Spec sheet

Purpose
SumatraPDF is a free Windows reader for PDFs, ebooks, and comics.Read 3 Oct 2026 · sumatrapdfreader.org
Free plan
YesRead 24 Sep 2026 · sumatrapdfreader.org
Integrations
The documentation lists LaTeX integration and configurable external viewers, search, and translation services.Read 3 Oct 2026 · sumatrapdfreader.org
Support
Users can report bugs through the issue tracker and ask questions or share feedback in the forum.Read 3 Oct 2026 · sumatrapdfreader.org
Accessibility
SumatraPDF supports screen readers through Windows UI Automation, built-in text-to-speech, and keyboard-only use.Read 3 Oct 2026 · sumatrapdfreader.org
Annotation tools
YesRead 24 Sep 2026 · sumatrapdfreader.org
Command-line tools
The pre-release 3.7 documentation describes command-line tools to convert, extract, and search PDF and other files.Read 3 Oct 2026 · sumatrapdfreader.org
Customization
Users can customize keyboard shortcuts, themes, and toolbar layout.Read 3 Oct 2026 · sumatrapdfreader.org
Document privacy
The privacy policy says documents and their names are not uploaded, and recently opened files are kept in a local settings file.Read 3 Oct 2026 · sumatrapdfreader.org
Document tools
The documentation lists PDF tasks including annotation editing, form filling, signing, merging, splitting, extracting, and conversion.Read 3 Oct 2026 · sumatrapdfreader.org
Form filling
YesRead 24 Sep 2026 · sumatrapdfreader.org
Formats
It supports PDF, EPUB, MOBI, CBZ, CBR, DjVu, XPS, CHM, and common image formats.Read 3 Oct 2026 · sumatrapdfreader.org
Lightweight
The product page describes SumatraPDF as lightweight and fast, with minimal memory use.Read 3 Oct 2026 · sumatrapdfreader.org
Network data
With update checks enabled, the app contacts the maker’s server; official builds also send crash reports that may include fragments of the open document.Read 3 Oct 2026 · sumatrapdfreader.org
Offline access
YesRead 24 Sep 2026 · sumatrapdfreader.org
Platform limit
The product page states that SumatraPDF is Windows-only and is not available for Mac or Linux.Read 3 Oct 2026 · sumatrapdfreader.org
Platform support
desktopRead 24 Sep 2026 · sumatrapdfreader.org
Portable use
A portable version can run without installation, including from a USB drive.Read 3 Oct 2026 · sumatrapdfreader.org
Text-to-speech
YesRead 24 Sep 2026 · sumatrapdfreader.org
Windows builds
The site lists Windows 7, 8, 10, and 11 support, with 32-bit, 64-bit, and ARM64 builds.Read 3 Oct 2026 · sumatrapdfreader.org

Plans and prices

Free Free Windows application · free and open source · no ads or subscription Read 3 Oct 2026 · sumatrapdfreader.org

Every SumatraPDF plan and price →

Strong points and limits

Strong points

  • Free and open source
  • Supports many ebook and comic formats
  • Portable version runs without installation
  • Annotation and form-filling tools
  • Text-to-speech and screen-reader support

Limits

  • Windows-only; no Mac or Linux version
  • No OCR support
  • Crash reports may include document fragments
  • Recently opened files stay in local settings

Who it suits

It suits Windows users who want a free reader with broad document-format support, annotation and form tools, accessibility features, or portable use. It is also relevant for users who need offline access.

Verdict

SumatraPDF provides a broad, free reading and document-tool set for Windows, including portable and accessibility options. Its Windows-only availability and lack of OCR are important limits.

Where Specifiction places it

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