

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.
Features
Properties
- Lightweight
- Optimal performance
- Privacy focused
Features
- Low memory usage
- Ad-free
- Tabbed interface
- Portable
- Multi Format Reader
- No registration required
- Works Offline
- Highlighter
- Global bookmarks
- PDF annotation
- Dark Mode
- Quick search
- Full-Text Search
- AzW Reader
- XOD File Reader
- OXPS File Reader
- PRC File Reader
- No Tracking
- Text to Speech
Export to office formats
- Data portability
Tags
- EPUB Reader
- cbz
- chm
- cbr
- fb2
- DjVu
- xps
- ebooks
- ereader
- pdf-software
- fb2-viewer
- DRM
- cbz-reader
- cbr-reader
- fb2-reader
- mobi
- djvu-viewer
SumatraPDF News & Activities
Recent News
- Maoholguin published news article about SumatraPDF
Sumatra PDF Reader 3.5 unveiled: features dark mode, ARM 64-bit support, and moreThe open-source PDF reader for Microsoft Windows, SumatraPDF Reader 3.5, has been unveiled with mul...
Recent activities
- swiss added SumatraPDF as alternative to ZeroUploadPDF
kodekenobi added SumatraPDF as alternative to Trevnoctilla
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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.







Comments and Reviews
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.
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.
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.
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
very nice, but often when opening a file, open last open pdf in background.
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.
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)
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……