What Is an XLSB File?
An XLSB file is an Excel binary workbook file.
They store information in binary format instead ofXMLlike with most other Excel files (e.g.,XLSX).
XLSB Files.
When dealing with big spreadsheets, you might also notice smaller file sizes when using XLSB vs XLSX.
XLSB files storespreadsheet datajust like any other Excelworkbookformat.
See ourList of Executable File Extensionsfor a listing of file extensions to avoid and why.
Microsoft’s free Excel Viewer lets you open and print XLSB files without needing Excel.
Some file formats supported by these programs include XLSX,XLS, XLSM,CSV,PDF, andTXT.
However, an important thing to understand is that XLSM is a macro-specific file format.
It’s really easy to confuse other file formats with XLSB given that their extensions look alike.
Another to be careful with isXLR.
Depending on the age of the file, it might not open in Excel at all.
