I’ve been getting un­explained pop-ups on my Windows 10 PC. One says, “How do you want to open this file?” when the file name extension (letters after the dot) is “.vdykyvf.” I can’t determine what ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. A file’s format—the way that it’s saved and encoded ...

Apple has released several new and revised Developer Release Notes. We post two examples below. Because of our recent coverage of the file name extensions vs. Type/Creator controversy, we offer an ...

A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...

File name extensions are how OS X recognizes file types, and changing the extension is one way to associate a file with a different program. Sometimes, however, changing the file extension does not ...

The MP3 made the iPod possible. Photo: Jim Merithew/Cult of Mac July 14, 1995: The MP3 file format receives its official name as the new .bit file extension gets changed to .mp3. The technology allows ...

The default setting for Windows is to not display a file's extension, which is the last period in a file name followed by 2 or 3 letters. Therefore, when viewing files in Windows you would only see ...