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DiffPDF 2.1.2

Quickly highlight the differences between two PDFs

by Mike Williams

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License: Freeware
Operating Systems: Mac OS X, Windows 7 (32 bit), Windows 7 (64 bit), Windows Server, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Languages: English
Software Cost: Free
Date Updated: 25 February 2013
Watchlist: Add download to my watchlist
Downloads To Date: 962
Developer: Qtrac Ltd.
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DiffPDF 2.1.2
Quickly highlight the differences between two PDFs

DiffPDF is a portable open source tool which compares two PDFs and then highlights the differences between them.

By default the program will compare the words in your documents. If that's not appropriate, though, you can run the comparison by characters, or even just appearance (the latter will detect if a diagram has changed, say, or a paragraph has been reformatted).

Normally PDF is extremely easy to use. Click "File #1" and specify your first file; click "File #2" for the second", then click "Compare" and within a moment or two your documents will be highlighted to show any differences between them.

If you only want to know whether the documents are different or not, then clicking the Log tab will reveal all. You can also scroll through a PDF to visually check that everything is as you expected. And there's also the option to save a PDF with only the pages which vary, again with the differences highlighted (which could be particularly useful if you're running the comparison for someone else).

This may be enough, but if you run into problems then the program has a few more settings and features which might help. You can choose to exclude the margins, for instance; it's possible to compare particular page ranges only within a PDF; and Zoning is an interesting technique to try and avoid false positives. (These are rare anyway, but check the Help file for more information.)

What's more, you can even run DiffPDF from the command line, very handy if you're comparing a lot of files and need to automate the process.


An excellent tool for comparing PDFs

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Spotlight: Free Full Software

WhatsApp Messenger 2.16.11

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.

What's new in 2.16.11?

 - Due to a bug in iOS 10, your notification sounds may not properly play until you restart your iPhone (press and hold the power and home buttons for 10 seconds).
- In groups, you can now mention specific people to get their attention by typing the @ symbol and choosing someone from the picker. 
- When forwarding messages, you can now send to multiple chats at once 
- Ask Siri to send WhatsApp messages or place WhatsApp calls (iOS 10+) 
- Answer WhatsApp calls right from your lock screen, just like a standard phone call (iOS 10+) 
- A new Widget lets you quickly jump to a recent chat or see which chats have unread messages (iOS 10+)