xlsx-to-markdown

Read, create, and edit XLSX (Excel) files. Recipe 1: convert XLSX to Markdown tables via .NET-native ZIP/XML parsing in PowerShell — no Excel COM, ImportExcel, or Python required. Beyond Extraction: create new workbooks and edit existing ones with openpyxl + pandas (no Excel install), the cardinal rule "write Excel formulas, never hardcoded computed values", header formatting / freeze panes / number formats, and a recalc + error-scan pass via LibreOffice headless that catches every #REF! / #DIV/0! / #VALUE! / #N/A / #NAME?. USE FOR: convert xlsx to markdown, Excel to markdown, xlsx to md, parse Excel in PowerShell, read xlsx without Excel, Excel attachment, create xlsx, write xlsx with formulas, openpyxl, pandas to_excel, edit xlsx, recalc xlsx, scan xlsx for formula errors, #REF! in xlsx, financial model in Excel, freeze header row. DO NOT USE FOR: Excel charts and pivot tables, Excel COM automation, files requiring style preservation that openpyxl drops.

Compatibility

Extraction is .NET-native PowerShell. Creating or editing workbooks requires Python with openpyxl and pandas; the recalculation and formula-error scan requires LibreOffice (soffice).