Monthly Archives: June 2019 Excel File Formats: XLSX, XLSM, XLS, XLTX, Xltm Posted on June 18, 2019 by Kashif Iqbal A......Formats: XLSX, XLSM, XLS, XLTX, XLTM Posted on June 18, 2019 by Kashif...XLSX , XLSM , XLS , XLTX or XLTM extension is a Microsoft Excel...