Moving across platforms required document file conversions that often resulted in document feature loss or related incompatibilities. Three different file formats came into play.

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside. Ho… ...

Word documents have a .docx file extension representing the word processing program. While the program can hold various images within the file, you cannot directly save a Word file as a .jpeg file ...

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 ...

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