Convert GNM to XLSX (Excel)

The GNM file extension, short for Gnumeric, is used by the Gnumeric spreadsheet application, part of the GNOME Desktop Software. It stores spreadsheet data in rows and columns, supports charts, and other functionalities. GNM files are compressed XML files, similar to XLSX, and can be decompressed using standard utilities like WinZIP. Gnumeric aims to provide an open-source alternative to Microsoft Excel.

The XLSX file extension, standing for "Excel Spreadsheet", represents a widely used format for Microsoft Excel spreadsheets. Introduced in Excel 2007, XLSX replaced the older XLS format, utilizing the Office Open XML (OOXML) standard to store data more efficiently and reduce file size. It supports advanced features such as pivot tables, charts, formulas, and macros, essential for data analysis and reporting in various professional settings. The transition to XLSX provided enhanced security, improved data recovery, and greater compatibility with other software applications, solidifying its status as a pivotal tool in data management and business intelligence.