xlsx-to-markdown

Convert XLSX workbooks to Markdown tables using PowerShell and .NET XML/ZIP APIs.

11|1|Updated Mar 27, 2026
One-click install
npx skills add https://github.com/raandree/CopilotAtelier --skill xlsx-to-markdown
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: xlsx-to-markdown
Source: https://github.com/raandree/CopilotAtelier/tree/main/Skills/xlsx-to-markdown
Command: npx skills add https://github.com/raandree/CopilotAtelier --skill xlsx-to-markdown

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Convert XLSX workbooks to Markdown tables without Excel, enabling documentation-friendly representations of tabular data and effortless sharing without dependencies on Excel or Python.

Core Features & Use Cases

  • XLSX parsing without Excel or external libraries by leveraging the internal ZIP/XML structure.
  • Supports shared strings and inline strings, multi-sheet workbooks, and column letter to index conversion.
  • Generates clean Markdown tables with proper alignment and escaping of pipe characters.
  • PS 5.1 compatible function Convert-XlsxToMarkdown for batch processing of files.

Quick Start

Run Convert-XlsxToMarkdown on your .xlsx file to generate a Markdown file alongside it.

Frequently Asked Questions about xlsx-to-markdown

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I convert XLSX to Markdown tables without Excel installed?

You can convert XLSX to Markdown tables by parsing the internal ZIP/XML structure directly using the built-in .NET APIs in PowerShell. This approach requires no Excel installation or external Python libraries to generate documentation-ready files.

Can I parse multi-sheet XLSX workbooks and shared strings in PowerShell?

Yes, parsing multi-sheet XLSX workbooks in PowerShell supports both shared strings and inline strings. The conversion process handles column letter to index conversion automatically to extract tabular data accurately.

What is the best way to batch convert XLSX files to Markdown for documentation?

The best way to batch convert XLSX files to Markdown is using a PowerShell 5.1 compatible function. It processes multiple files to generate clean Markdown tables with proper alignment and escaped pipe characters alongside the source files.

Does PowerShell 5.1 support parsing XLSX ZIP and XML structures natively?

Yes, PowerShell 5.1 supports parsing XLSX ZIP and XML structures natively through built-in .NET APIs. You do not need to install any external dependencies or modules to read the workbook contents.

Why does my XLSX to Markdown conversion fail without Excel or Python dependencies?

XLSX to Markdown conversion does not fail without Excel or Python because it directly parses the underlying ZIP/XML structure. As long as you use compatible .NET APIs in PowerShell 5.1, the extraction works independently.

How do I handle pipe characters when converting XLSX data to Markdown tables?

When converting XLSX data to Markdown tables, pipe characters are properly escaped during generation. This ensures the resulting Markdown syntax remains valid and renders correctly in documentation viewers.