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The following guide provides you with information on how to edit PDF documents using tools that are available for free online or as desktop programs.

The PDF file format, originally created by Adobe, is a popular format for a wide variety of documents from presentations and invoices over forms and legal documents, to comics and books.

One of the main appeals of the format is that it preserves the original formatting, and that PDF documents can be loaded on desktop and mobile devices, as well as online easily.

Folder Options X is a free, long standing, program for Windows devices that you may use to enable several hidden Windows Explorer settings.

The program was designed initially for Windows 7, to bring back several Windows Vista Windows Explorer settings that Microsoft hid when it released Windows 7.

Folder Options X works under newer versions of Windows equally well however, so that you may run it on a Windows 8.x or Windows 10 device.

Dmoz, one of the longest standing, human curated, directories on the Internet will be shut down for good on March 14, 2017.

Directories played a huge part in the early days of the Internet, especially if they were curated by companies or volunteers.

There were several reasons for that. First, because search engines were not all that good in the days. Dmoz dates back to a time were Google did not exist yet, and Netscape fought it out against the dominating Internet Explorer browser. Yes, Opera was there to.

AndreaMosaic is a free cross-platform mosaic creation software that is available for Windows, Mac OS X and Linux devices.

The Windows version is compatible with all versions of Windows from Windows 2000 onward including Windows 7 and Windows 10.

It is offered as a portable version or installer. If you download the portable version, you will notice that it is offered as a self-extracting archive. Please note that it won't extract the files to a root directory unless you change the target manually.

Meteor - App Speed Test is a free application for Google Android devices that tests the mobile connection speed and indicates how well popular apps will run with those speeds.

Most mobile benchmark applications do the same thing: they test the ping, upload and download speed, and may use several servers for that located in different regions of the world.

WinDataReflector is a free portable file synchronization software with visual comparison feature for Microsoft's Windows operating system.

The program is offered as a portable version that you can run from any location. The program is tab-based, and differentiates between backup and synchronization tasks.

Vivaldi 1.8 will ship with a new browsing history design that is easier to use and offers additional information that users may find useful.

Browsing history pages are boring in most browsers. They offer a chronological listing of pages visited in the browser, and a search / filter option.

Most list the visited sites as text, while some prefer to display them as thumbnails instead.

The most recent version of the Vivaldi web browser, version 1.8.770.9, a development snapshot of the upcoming Vivaldi 1.8 Stable browser, introduces a redesigned browsing history page.

Hackr.io is an online search engine designed specifically to find online coding courses and tutorials in virtually any programming language that exists.

While you can use any search engine out there to find plenty of programming courses and tutorials, or use YouTube or other video hosting sites for that, a great list of courses and tutorials may be more to your liking.

Microsoft began to roll out its new Unified Update Platform last year, first on mobile and then for Windows 10 Insider Builds as well.

One of the advantages of the platform was the use of differential update packages. This meant, all in all, that update packages would be a lot smaller going forward.

Color blindness affects a large percentage of the population. Studies have shown that up to 8% of males and 0.5% of females of Northern European heritage are affected by red-green color blindness for instance. The ability to distinguish between colors gets worse with age as well.

As a webmaster, you may want to make sure that your site is accessible to visitors with color blindness, or difficulties distinguishing certain color patterns.