Category Archive: Spreadsheet

Official blog for Spreadsheet file formats.

What is an XLSX File?

A file with XLSX extension is a ZIP-compressed XML based spreadsheet file format that was introduced by Microsoft with the launch of Microsoft Excel 2007. The format is supported by Excel 2007 and later versions. Prior to XLSX, Excel saved … Continue reading

Posted in Spreadsheet | Leave a comment

Excel File Formats: XLSX, XLSM, XLS, XLTX, XLTM

A file with XLSX, XLSM, XLS, XLTX or XLTM extension is a Microsoft Excel file that uses specific standard file format. You can show or display file extension on Windows OS from Folder Options. MS Excel lets you save files … Continue reading

Posted in Spreadsheet | Tagged | Leave a comment

Spreadsheet File Formats at is your one stop for guidance about file formats. Its unique combination of file format wiki, news and support forums give you the opportunity to get knowledge about file types and engage in fruitful discussion with file format community. … Continue reading

Posted in Spreadsheet | Leave a comment