What is the file extension of Excel2010 workbook?

#What is the file extension of Excel2010 workbook?

The Excel2010 workbook file extension is xlsx, which is the extension of the Microsoft Office EXCEL document. Its compressed file format based on the Office Open XML standard replaces its previous default file format. Traditional filename extensions have the letter "x" added to the end.

XLSX file standard

ISO_IEC_29500-1_2012

ISO_IEC_29500-2_2012

ISO_IEC_29500- 3_2012

ISO_IEC_29500-4_2012

The difference between xls and xlsx

".xls" is the format of the Microsoft Office Excel worksheet in version 03 of Office. Use In the 03 version of Office, the suffix of the Excel file format saved by default when creating a new Excel is “. The saved Excel file format suffix is ".xlsx".

07 version of Office Excel can open and edit Excel files of version 07 (suffix ".xlsx"), and can also open and edit Excel files of version 03 (suffix ".xls") without garbled characters. Or stuck. However, Office Excel version 03 can only open and edit Excel files of version 03 (suffix ".xls"); if you open and edit Excel files of version 07 (suffix ".xlsx"), garbled characters may appear or the operation may not begin. It got stuck in the end.

".xls" is a unique binary format, and its core structure is a compound document type structure, while the core structure of ".xlsx" is an XML type structure, using XML-based compression. Make it take up less space. That's what the last "x" in ".xlsx" means.

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