File formats define how files are organized and how their data is encoded. You can identify a file's format by its extension, ...

Changing file formats in Windows 11 can be done via File Explorer for quick swaps. Command Prompt offers a trickier method to alter file extensions, but it must be done carefully. Compatible apps like ...

Starting with Microsoft Office 2007, Office Open XML is the default document format for saving applications. See Office file formats and ECMA. An Office Open XML (OOXML) document is a zipped ...