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SumatraPDF 3.1.1

Lightweight PDF reader that doesn’t compromise on features

by Bob Thornton

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Based on 5 ratings
License: Freeware
Operating Systems: Windows 10, Windows 7 (32 bit), Windows 7 (64 bit), Windows 8, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Languages: English
Software Cost: Free
Date Updated: 02 November 2015
Watchlist: Add download to my watchlist
Downloads To Date: 6503
Developer: Krzysztof Kowalczyk
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Sumatra PDF
Use the lightweight Sumatra PDF to open PDF files

Think of PDF files and the first program that springs to mind is likely to be Adobe Reader. While this is a perfectly capable program, recent versions have come in for criticism for being large and slow, making them unsuitable for anyone running an older computer or a lower sec netbook.

SumatraPDF is a lightweight PDF reader which makes scant use of system resources and can even be run from a USB drive. The program offers faithful reproduction of PDF files and includes all of the features you would expect to find – a search facility, page navigation, zooming and more.

There are a variety of different views available and a rotate option is available for PDFs that have not been correctly configured. With the ability to save PDFs as text files and email files directly from within the programs, Sumatra PDF has all of the basic covered, but it does not offer some of the more advanced features found in alternative titles.

If you’re looking for a PDF reader that focuses on speed rather than features, Sumatra PDF is the tool for you. While the program could hardly be described as feature-packed, it is often the case that you simply need to open a PDF rather than doing anything more exotic with it – and Sumatra PDF is perfect for this.

Version 3.1 brings (Changelog):

- (re)add support for old processors that don’t have SSE2
- support newer versions of unrar.dll
allow keeping browser plugin if it’s already installed
- crash fixes


If you are not too demanding of your PDF viewer and are looking for pure performance, Sumatra PDF is your ideal tool.

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Spotlight: Free Full Software

WhatsApp Messenger 2.12.12

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

Version 2.12.12 brings:

• Links that you share or receive will now include a rich preview. When sending a link, you have the option to not include a rich preview.
• Additional 3D Touch features: You can now quickly Peek and Pop chats.
• Redesigned Settings tab. 
• You can now view all your starred messages across all your chats in Settings — Starred Messages.