Convert XLSM to PNM

The XLSM file extension stands for Microsoft Excel Macro-Enabled Spreadsheet. It allows users to automate tasks via macros, enhancing productivity in complex data manipulation and repetitive operations. Introduced with Excel 2007 as part of the Office Open XML format, XLSM files support the embedding of VBA (Visual Basic for Applications) macros within spreadsheets. This format offers advanced functionalities for financial analysis, data modeling, and automation within the Microsoft Excel environment, optimizing efficiency for professional use.

The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.