2012-03-19 2025-02-11 20251210-0 Excel XLS Excel XLS 2012-09-01 https://www.iana.org/assignments/media-types/application/vnd.ms-excel 2012-11-27 2012-09-27 application/vnd.ms-excel xls .xls application/vnd.ms-excel 600 Microsof Excel Workbook XLS is a proprietary binary file format used for Microsoft Excel spreadsheet which features calculation, graphing tools, pivot tables and a macro programming language. XLS XLS false XLS 2012-09-01 XLS false true true true true