File Extensions in Microsoft® Office Excel 2010

Microsoft Office Excel 2010 is a very popular and powerful application for creating formatted spreadsheets, graphs, etc. Microsoft Office Excel 2010 supports robust XML file formats. It offers features to simplify the exchange of data between Microsoft Office applications and Enterprise Business systems. XML file formats would help the rapid creation of documents from different data sources. It offers high speed document assembly, data mining, and content reuse. Improved damaged file recovery, safer documents, easier integration, transparency and improved information security, compatibility etc are the benefits of open XML formats. The default file format in Microsoft Office Excel 2010 is xlsx. With XML files, the developers may get direct access to specific contents within files, like charts, comments, and document metadata.

• File extension XAR
• File extension XLA
• File extension XLB
• File extension XLS

File extension XAR

The XAR file extension is associated with Microsoft Office Excel 2010. This file extension can be used for the Microsoft Excel AutoRecover backup file. Microsoft Office Excel 2010 comes with a built-in AutoRecover feature. AutoRecover feature helps to save all open Microsoft Office Excel 2010 files at a user-definable fixed interval. This file could be used to recover data in the Microsoft Office Excel 2010 file if it closes unexpectedly.

File extension XLA

The file extension XLA is used to save Microsoft Office Excel add-in files. Microsoft Excel add-in is a file that Microsoft Office Excel could load when it starts up. This Microsoft Office Excel add-in files contain some program code used to add additional functionality to the file. This code provides new functions or tools to execute macros for Microsoft Office Excel files.

The file extension XLB can be used for Microsoft Office Excel Toolbars. Toolbar is also known as Command bar. Toolbar can be used to store the positions, layout and other settings for the various toolbars used by Microsoft Office Excel 2010. The .xlb files may allow you to transfer your custom command bar layout from one system to another.

The XLS file extension can be used for workbooks, spreadsheet document files in Microsoft Office Excel 2010. The XLS is the proprietary file format in Microsoft Office Excel that can be used for storing its documents. This file extension is used for proprietary binary file format called Binary Interchange File Format. This is the default file format for older versions of Microsoft Office Excel such as Microsoft Office Excel 2000, Microsoft Office Excel 2003, etc. However, you can save your workbook in this format in Microsoft Office Excel 2010 to use in systems installed with the older version of Microsoft Office.

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