convert-pptx

name	convert-pptx
description	Convert PowerPoint (.pptx) files to clean markdown for LLM context (uses markitdown). Use when converting presentations to markdown for analysis or summarization. Triggers include "convert pptx", "powerpoint to markdown", "pptx file", "slides to markdown".
argument-hint	<pptx-file> [output-dir]
allowed-tools	["Bash","Read","Write","Skill"]
model	haiku
context	main
user-invocable	true

Convert PPTX → Markdown

Convert the PowerPoint file at $1 to clean markdown format optimized for LLM context.

Steps

1. Install dependency: Use toolsmith:install-dependency skill to ensure markitdown is installed
2. Parse arguments: Input file $1 (required), output dir $2 (optional, defaults to ./converted/)
3. Prepare output dir: Create $2 if it doesn't exist
4. Convert:

   source .venv/bin/activate && python -m markitdown "$1" -o "$OUTPUT_DIR/output.md"
   

5. Report: Output location, file sizes, structure summary (slide count, headings, tables, images), any warnings

Goal

Extract clean markdown for LLM context — analysis, summarization, Q&A. NOT for round-tripping back to PPTX.

No content sent to any LLM during conversion (pure script-based extraction).