The web has been long annoyed by the complexities and slow performance of the various different PDF viewers available and especially the reader produced by Adobe. In the case of Sumatra PDF, you really do get a basic PDF reader that's not only fast but stable.
Bigger isn't always better and some have said and it couldn't be truer in the case of Sumatra PDF. It's a small and lightweight PDF reader which not only uses very little resources but also provides for a quick and effortless way to view PDF documents. Sumatra is also capable of reading eBooks (ePub, Mobi), comic book files (CBZ, CBR), XPS documents and others.
The layout of Sumatra PDF doesn't include any special features and provides some of the most basic features anyone could want from a PDF reader such as zoom-in/zoom-out, page jumping, basic settings, scrolling and naturally viewing of PDFs. It can also search through documents which is handy.
You can also have Sumatra PDF automatically check for updates if you insist on remaining at the bleeding edge, but due to its basic functionality, there really aren't that many updates being released too often.
Overall, Sumatra PDF is a nice breath of fresh air which provides an excellent lightweight solution for reading PDF files without having an impact on system performance or worse, bogging down your system with "additional offers." We highly recommend uninstalling Adobe Reader and replacing it with Sumatra PDF.
Sumatra PDF is software which can read PDF files.Compability and license
Sumatra PDF is licensed as freeware for the Windows (32-bit and 64-bit) operating system / platform from pdf software without restrictions. Sumatra PDF 3.1.2 is available to all software users as a free download (Freeware).
Compatibility with this software may vary, but will generally run fine under Microsoft Windows 10, 8, 8.1, 7, Vista and XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from Krzysztof Kowalczyk. This download is distributed as SumatraPDF-3.1.2-install.exe and SumatraPDF-3.1.2.zip.
We have tested Sumatra PDF 3.1.2 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.