Download Details

Version: 3.6.1 (latest)
File size: 10.56 MB
License: Free
Security scan: VirusTotal: 71 of 71 engines say OK (0 flagged)
SHA-256 checksum: 1eee71cccd2ea6e94d5bcea54ee2f759844da3e1a0ee2f6045035b1d17b94381
Developer: Krzysztof Kowalczyk
Supported OS: Windows 11, Windows 10, Windows 7, Windows 8.1
Installers: 64-bit (x64), 32-bit (x86), ARM (Arm64), Portable, Offline
Downloads: 8091
Rating: 4.8 out of 5 · 83 reviews
File name(s): SumatraPDF-3.6.1-64-install.exe, SumatraPDF-3.6.1-install.exe, SumatraPDF-3.6.1-arm64-install.exe, SumatraPDF-3.6.1-64.zip

Reviewed by Mohamed Zaki
Tested on Windows 11 and 10 · October 31, 2026 · How we review

Screenshots

Sumatra PDF stands out for its concentration on speed and simplicity. Developed with a focus on lightweight design, it prioritizes quick loading times and a clutter-free interface.

Launched in 2008, this free and open-source program has proven itself as a solid and stable PDF viewer.

Unlike its feature-rich counterparts, Sumatra PDF keeps things basic. Its core function lies in flawlessly rendering PDFs, while offering essential navigation tools like zooming, searching, and bookmarking.

This streamlined approach makes it ideal for users who simply want to read PDFs without the distraction of editing features or bulky interfaces. Furthermore, Sumatra PDF boasts impressive compatibility, supporting not just PDFs but also a range of popular ebook formats like EPUB and MOBI.

This versatility, coupled with its lightning-fast performance, has cemented Sumatra PDF’s place as a favorite among those who prioritize a smooth and efficient PDF reading experience.

For users seeking speed, simplicity, and efficiency: Sumatra PDF is the PDF viewer to go with. This free, open-source program stands out for its remarkably small size, lightning-fast performance, and focus on core functionality.

Whether you’re a casual reader or a productivity powerhouse, Sumatra PDF offers a compelling alternative to its resource-hungry competitors.

Lightweight Champion: With a download size of under 5MB, Sumatra PDF leaves behemoths like Adobe Acrobat Reader in the dust. This translates to instant startup times and minimal impact on your system resources.

Speed Demon: Forget sluggish page rendering and frustrating delays. Sumatra PDF’s clean design and efficient codebase ensure PDFs open and navigate instantaneously.

Focus on Essentials: Eschewing unnecessary bells and whistles, Sumatra PDF prioritizes core PDF viewing functionalities. Open, zoom, print, search, bookmark – it gets the job done without cluttering your screen with distracting features you might never use.

Customization Options: Despite its streamlined interface, Sumatra PDF allows for personalization. Adjust zoom levels, configure keyboard shortcuts, choose preferred page layouts, and even enable plugins for additional features.

Open Source Advantage: Being open-source, Sumatra PDF benefits from a dedicated community of developers who contribute code, fix bugs, and implement improvements.

Not for Everyone: While ideal for basic PDF reading, Sumatra PDF lacks some advanced features found in other programs. If you heavily rely on annotation tools, form filling, or complex document manipulation, you might require a more feature-rich alternative.

How to Download & Install

Downloading and installing Sumatra PDF is a breeze, making it the perfect choice for both tech-savvy individuals and casual users alike.

Preparing for Installation:

System Requirements: Ensure your Windows PC meets the minimal requirements: Windows 11, 10, 8, or 7 (for older systems, use version 3.1.2). Both 32-bit and 64-bit systems are supported.
Choosing Your Version: Options include:
- Installer: Ideal for traditional installation on your system.
- Portable Version: Runs directly from a USB drive or other location, no installation required.
- ARM 64-bit builds: For specific ARM-based Windows devices.

Downloading and Installation:

Select your preferred version: Choose the installer for system-wide use or the portable version for ultimate flexibility.

Download the file: Click the above download button. Remember, the file size is incredibly small, so the process will be quick.

Installation (if using installer): Run the downloaded executable (.exe) file. Follow the on-screen instructions, choosing your preferred installation location and settings.

Portable Version: No installation needed! Simply extract the downloaded ZIP file to your desired location (e.g., USB drive) and run the executable file within.
Additional Notes:

During installation, you can choose to associate Sumatra PDF with PDF files, making it your default reader.
Consider downloading plugins for additional features like text-to-speech or enhanced search functionalities.

The portable version is ideal for testing the program, using it on multiple computers, or keeping it on a portable drive for on-the-go reading.

Pros & Cons

What we liked

Free and open-source
Small and fast
Simple interface
Supports various PDF features

What we didn't like

Lacks some advanced editing features
Limited annotation capabilities

Best Sumatra PDF Alternatives

Adobe PDF Reader
The king of PDFs, letting you view, print, and even edit them.
Foxit PDF Reader
A free, lightweight program for viewing and annotating PDFs.
PDF-XChange Viewer
Tiny 2000s PDF reader that did more than just viewing PDF documents.

Conclusion

4.8out of 5 · 83 user ratings

For Windows users seeking a fast, lightweight, and efficient PDF reader, Sumatra PDF stands out as a champion. Its minimalist design, lightning-fast performance, and focus on core functionalities make it an excellent choice for casual readers and productivity enthusiasts alike.

While it might not be suitable for everyone, Sumatra PDF proves that small and simple can be surprisingly powerful. So, if you’re looking for a no-nonsense PDF reader that won’t weigh down your system or your patience, give Sumatra PDF a try. You might just find your new favorite reading companion.

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Sumatra PDF