Sumatra PDF – An Open Source PDF Viewer

Sumatra PDF

Sumatra PDF stands out from other PDF tools by keeping things fast and light; its portable nature allowing it to run directly off an external drive without needing additional setup or installations.

It also loads quickly, without calling home or needing subscription services for use; moreover, it’s free and open-source software.

Easy to Use

Sumatra PDF is an outstanding lightweight solution for reading and viewing PDF documents, featuring several useful functions that may not be found elsewhere. Specifically tailored to be light on system resources allowing it to run seamlessly even on older computers with limited resources, while being portable enough for use across platforms without installing new copies of software every time it needs accessing documents on different computers.

To start using Sumatra PDF, visit its official website and download an installer version compatible with your operating system. Follow the installation prompts until finished; once downloaded and installed, double-clicking the desktop icon opens it into browse mode allowing you to locate PDF documents before selecting and pressing Open.

This free PDF viewer features an intuitive, unobtrusive design, with only essential tools visible at any one time. Users can access all available options either by clicking on an icon at the top of the screen or visiting the ‘Options’ menu; this approach helps users focus on reading without being distracted by software features that don’t pertain directly to what they are consuming.

This program can also reduce the size of PDF documents, making them easier to send via email or file-sharing services. Furthermore, it includes options to compare two PDF documents to identify differences or similarities, with a series of keyboard shortcuts provided for easy navigation and text translation into multiple languages.


Sumatra PDF is an open-source document viewer capable of working with many document formats including ePub, FB2, FictionBook (FB2), MOBI, PRC and DjVU for HTML Help as well as Comic Book Archive File formats such as CB7 CBR CBZ Comic Books Archive Formats (CBR and CBZ). However, its main focus lies on reading documents rather than offering advanced annotation or form filling features.

To use this program, download it from its website and install it on your computer. There are both 32-bit and 64-bit versions to ensure compatibility with any operating system you may use, plus its small size makes it suitable for older machines with limited system resources.

Once installed, Sumatra PDF automatically registers itself for supported file types, meaning when you double-click an eligible document in File Explorer it will launch and display its content automatically. Furthermore, Sumatra PDF offers numerous keyboard shortcuts to enhance workflow and quickly access frequently used functions.

This application can be easily downloaded for free and features an easy setup process that doesn’t use too many system resources. Furthermore, it can even run as a portable application from an external storage device or USB flash drive. Additionally, this reader offers support for multiple languages and features a modern user interface to ensure an enjoyable reading experience for users. Furthermore, different viewing modes like single page view, continuous reading mode and book view are supported. Notable features of this software include support for over 69 language translations, PDF editing capabilities and printing functionality. Furthermore, macOS and Linux users can open it using this program which also features dark/light modes to aid strain-free reading.

Compatible with Multiple File Formats

Sumatra PDF was designed to be an easily accessible, lightweight, and fast program, compatible with a range of file formats. Furthermore, its portable nature makes it an excellent option for users with older computers or limited storage space.

Sumatra PDF’s primary function is to offer an intuitive user experience when reading and navigating document files, with minimal set of tools located at the top of the app that are user-friendly and straightforward (Search, Print, Go to Page/Next Page/Previous Page, Render Mode options/Zoom modes etc).

As a result, this software boasts a minimal system footprint and resource requirements to operate effectively. Furthermore, its small size makes it suitable for use on computers with limited hardware configurations without causing performance issues. Furthermore, both 32-bit and 64-bit versions are available to ensure compatibility with modern operating systems.

It also supports multiple eBook and text formats, including Mobi, ePub, XPS, DjVu, CHM and CBZ, making it ideal for users wanting to view documents from various sources. Users may even combine two separate PDFs into a single document using this free PDF viewer.

This software is easy to use and can be downloaded directly from its website with a simple installation process and without advertisements, providing a great option for those wanting an alternative to extra software bloatware. Furthermore, it can run from most PC desktops, making this program compatible.

Intuitive and User-Friendly Interface

Sumatra PDF stands out from more feature-packed PDF editors by being lightweight and straightforward. It offers a minimalist set of on-screen tools carefully placed to facilitate easy accessibility, multiple viewing modes to suit different reading preferences, simple editing functionality and multilingual support – making it suitable for an array of users.

This portable application can be run from external storage devices and is compatible with most versions of Windows from 2000 to 2016, including versions 2000 through 2016 of these operating systems. It utilizes the Windows Graphics Device Interface (GDI) for drawing graphical objects and transmitting them to output devices like printers and monitors; unfortunately, Linux or Android OSes do not currently support it directly but third-party software can allow access.

With so many PDF readers offering various features, it is essential that you select one that meets your individual needs and preferences. This could be Adobe Acrobat Reader DC, Sumatra PDF or STDU Viewer; your decision ultimately rests on how your documents need editing as well as budget considerations.

Sumatra PDF is an ideal option for anyone who wants to read and annotate PDF documents without compromising speed or usability. This lightweight program is particularly helpful for users with slower computers who experience difficulties starting up Adobe Reader; but students and beginners looking for an easier or less-packed alternative to more advanced PDF editors such as Wondershare PDFelement can also benefit from using this lightweight option that comes equipped with cloud sync for keeping documents accessible across devices.

Essential Reading Features

When it comes to reading PDF documents, there are various programs users can select from. Some are bloated and cumbersome to use while others provide only essential features that enable quick and effortless viewing of information – an example being Sumatra PDF which offers a lightweight design without overextending a user’s hardware resources.

With this free PDF viewer, users can quickly view, read, and print PDFs within minutes. Furthermore, its OCR technology enables them to convert scanned documents into editable PDFs, fill out forms to save as PDFs as well as upload files directly into cloud storage services for sharing and collaboration purposes.

Sumatra PDF offers both a Windows installer (with no bundling, add-ons or adware), as well as a portable version that runs off a USB drive. Both versions feature keyboard shortcuts for easier navigation and content management as well as the option to automatically open your email client and attach PDF documents when creating new messages.

Though Adobe Acrobat might be more comprehensive and robust than QuickPDF Editor, QuickPDF is still capable of doing its job well enough for most people. QuickPDF is also great if you don’t require full PDF editor features but would rather rely on something less resource-intensive that gets their tasks completed quickly.

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