SumatraPDF icon
SumatraPDF icon

SumatraPDF

This free, open-source viewer for Windows supports multiple formats like PDF, eBooks (ePub, Mobi), CHM, and Comic Books (CBZ, CBR). Prioritizing simplicity and speed, it offers a lightweight, portable design with a minimalist interface, catering to users seeking fast and efficient document viewing.

SumatraPDF screenshot 1

Cost / License

  • Free
  • Open Source

Application types

Platforms

  • Windows
4.4
Very Good109 reviews
1663likes
112comments

Features

Suggest and vote on features

Properties

  1.  Lightweight
  2.  Optimal performance
  3.  Privacy focused

Features

  1.  Low memory usage
  2.  Ad-free
  3.  Tabbed interface
  4.  Portable
  5.  Multi Format Reader
  6.  No registration required
  7.  Works Offline
  8.  Highlighter
  9.  Global bookmarks
  10.  PDF annotation
  11.  Dark Mode
  12.  Quick search
  13.  Full-Text Search
  14.  AzW Reader
  15.  XOD File Reader
  16.  OXPS File Reader
  17.  PRC File Reader
  18.  No Tracking
  19.  Text to Speech
  20. Microsoft 365 Copilot icon  Export to office formats
  21.  Data portability

 Tags

  • EPUB Reader
  • cbz
  • chm
  • cbr
  • fb2
  • DjVu
  • xps
  • ebooks
  • ereader
  • pdf
  • pdf-software
  • fb2-viewer
  • DRM
  • cbz-reader
  • cbr-reader
  • fb2-reader
  • mobi
  • djvu-viewer

SumatraPDF News & Activities

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Comments and Reviews

   
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Comment summary: SumatraPDF is widely praised for its speed, lightweight design, and open-source nature, often outperforming heavier alternatives like Adobe and Foxit in terms of speed and resource efficiency. It supports multiple formats beyond PDFs, including EPUB and MOBI. However, users frequently note its limited printing capabilities and lack of advanced features like annotation or form filling. Despite these drawbacks, it remains a popular choice for basic PDF viewing.
Top Positive Comment
ChelOis
23

Even when it may have a somewhat unpleasant aesthetic, it is fast and very light. This marvel is an essential part of the Freeware / OpenSource suite of applications that I always install and use on my PC.

Do yourself a favor, forget about other programs like Adobe Reader, etc.

Top Negative Comment
Alex Horne
1

Good for looking at a PDF quickly, but anything more and SumatraPDF just lacks very basic features, like filling forms.

Honestly, this just makes it useless for real use, because it would mean keeping two different pdf readers installed just in case you encounter forms.

marshastoutenburg
0

It is light and spunky. However, I couldn't figure out how to see/hide layers and set a specific zoom (example: 37.5%). I use a projector for cutting out patterns so I need to have very good control over the zoom levels.

Stintion
0

Lightweight, fast, non-cluttery UI and has all the basic functionality to read a PDF. I think it's more than enough for 90% of people

Giovanni
0

very nice, but often when opening a file, open last open pdf in background.

Review by a new / low-activity user.
Oktay Mercan
2

It's free and open-source. The portable version consists of a single executable file. It displays images with good quality. The interface could be a bit better, and the advanced settings are not user-friendly at all — you have to configure them through a config file, as there's no GUI for that. Plus, it's not cross-platform — only Windows is supported.

guchenfeng
1

OPEN-SOURCE, lightweight program so it's extremely fast to open PDF(s), multiple tabs UI, multiple formats supports, I unilaterally declare: it is the No. 1 in the PDF Reader tools!!! Disadvantage: No night mode (perhaps not as necessary) 开源、程序体积超级轻巧,打开PDF文件极快、支持非常多文件格式,所以,我单方面认为,这就是PDF阅读工具界第一!! 缺点:没有夜间模式(也许不是那么有必要)

guchenfeng

Additional explanation: The above is based on the simplest "as a reader", If there are other slightly more complex scenarios, such as commenting, taking notes, marking, etc., it may not be able to handle them... 补充说明:上述评价是基于最简单的“阅读”这个功能下的,如果有其他稍微复杂的场景,比如做注释、笔记、标记等等,它可能就无法胜任了……

Review by a new / low-activity user.
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What is SumatraPDF?

Sumatra PDF is a free PDF, eBook (ePub, Mobi), FB2, XPS, DjVu, CHM, Comic Book (CBZ and CBR) viewer for Windows.

Sumatra PDF is powerful, small, portable and starts up very fast.

Simplicity of the user interface has a high priority.

Official Links

SumatraPDF information

  • Developed by

    PL flagKrzysztof Kowalczyk
  • Licensing

    Open Source (GPL-3.0) and Free product.
  • Written in

  • Rating

    Average rating of 4.4 (109 ratings)
  • Alternatives

    108 alternatives listed
  • Supported Languages

    • English

AlternativeTo Categories

News & BooksOffice & Productivity

GitHub repository

  •  15,844 Stars
  •  1,869 Forks
  •  674 Open Issues
  •   Updated  
View on GitHub

Our users have written 112 comments and reviews about SumatraPDF, and it has gotten 1663 likes

SumatraPDF was added to AlternativeTo by Geekgangas on and this page was last updated . SumatraPDF is sometimes referred to as Sumatra, SumatraPDF