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.xlsb file extension

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.xlsb
Excel binary workbook.

A .xlsb file is a saved Excel spreadsheet file, generated with Microsoft Excel 2007 (or later). A .xlsm file allows the use of macros (VBA) in the spreadsheet.

Unlike a .xlsm file a .xlsb file is saved in a binary file format. This makes it smaller and more effcient than the corresponding .xlsm file would be.

For more information see:

Can you add to this? Do you know of any applications not already listed which will work with .xlsb files, view .xlsb files or open .xlsb files? Are you able to contribute any additional reference information or file format information about .xlsb files or have you spotted any errors or omissions? If so please let us know by emailing us at feedback@cryer.co.uk - Thank you.