What does files vs. folders actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

A bug in Lion means Apple's popular TextEdit utility may append the TXT extension to files regardless of their original file types.

Microsoft Word is capable of opening many document file formats, including those produced by WordPerfect Version 11. While Word will open these files, they may not display correctly due to data ...

On computers and mobile devices, file extensions are the suffixes that apps append to filenames. When you see an item like "document.docx" for example, the .docx extension tells the computer and ...

Table listing every Windows file type that has or can be used maliciously Download this Microsoft Word document table listing over a 100 file types/extensions that can be used maliciously ...

In iOS 16.0 and later, you can make Apple's stock Files app display file extensions for items in the currently viewed folder. Keep reading to learn how it's done. The only issue until recently was ...