A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...

In hand: there are thousands of computer file extensions. In the dark corners of a computer, strange file extensions lurk. Reuben Schwarz explains what they are. If you've ever taken a look around ...

Most files you find on the internet or from work are pretty easy to open. Most text, audio, and image readers are able to open standard file formats like JPEGs and PDFs. However, there are times when ...

Microsoft hides file extensions in Windows by default even though it's a security risk that is commonly abused by phishing emails and malware distributors to trick people into opening malicious files.

The Macintosh, now called the Mac, was the first widely sold personal computer (PC) with a graphical user interface (GUI) and a mouse.

One of the easiest ways to render your computer unusable is to mess with the operating system’s files and settings–one accidental deletion of a single file can ...

New installations of Windows hide all file extensions, except for Windows components, that would appear in Explorer or an application dialog box that displays file names. File extensions are ...