xlsm
xlsm is the file extension used by Microsoft Excel for macro-enabled workbooks. These files store spreadsheet data along with Visual Basic for Applications (VBA) code that automates tasks and adds custom functionality.
xlsm files are based on the Office Open XML format introduced with Excel 2007. They are zip
Typical use includes automating repetitive tasks, creating templates, building dashboards, and implementing custom functions. The presence
Compatibility: Excel 2007 and later can open and save xlsm files. Older Excel versions (pre-2007) require compatibility
Security: because macros can contain malware, Excel uses macro security settings to disable, prompt, or enable