local-pandoc – OpenClaw Skill

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name: local-pandoc description: Converts Markdown files to PDF files using the pandoc command-line utility. Use when a user asks to convert a .md or markdown file to a .pdf file.

Local Pandoc Conversion Skill

This skill uses the pandoc command-line utility to convert documents between numerous markup formats.

Basic Usage

The fundamental structure of a pandoc command is:

pandoc [options] [input-file]…

Simple Conversion

To convert a Markdown file to HTML:

pandoc -o output.html input.md

Specifying Formats

While pandoc can infer formats from file extensions, you can be explicit with the -f (from) and -t (to) flags.

# Convert HTML to Markdown
pandoc -f html -t markdown input.html

Standalone Documents

To create a complete document with a proper header and footer (e.g., a full HTML file), use the -s or --standalone flag.

pandoc -s -o output.html input.md

Advanced Examples

The following examples are extracted from the official Pandoc User's Guide.

PDF Output

To create a PDF, pandoc typically uses a LaTeX engine. Ensure one is installed.

# Basic PDF creation
pandoc input.md -o output.pdf

# Control PDF engine and style via variables
pandoc input.md -o output.pdf --pdf-engine=xelatex -V geometry:margin=1in -V fontsize=12pt

Document Structure & Metadata

Pandoc can automatically generate a table of contents and use document metadata.

# Create a document with a Table of Contents (up to level 3 headings)
pandoc --toc --toc-depth=3 -o output.docx input.md

# Set metadata fields from the command line
pandoc -M title:"My Report" -M author:"Galactus" -o output.pdf input.md

Templates and Styling

You can control the final output's structure and style with templates and other options.

# Use a custom template for HTML output
pandoc -s --template=my-template.html -o output.html input.md

# For HTML output, link to a custom CSS file
pandoc -s --css=styles.css -o output.html input.md

# For DOCX output, use a reference document for styling
pandoc --reference-doc=reference.docx -o output.docx input.md

Reading from the Web

Pandoc can directly fetch and convert content from a URL.

pandoc -f html -t markdown https://www.fsf.org

Other Useful Options

# Preserve tabs instead of converting them to spaces
pandoc --preserve-tabs ...

# Control line wrapping in the output source code
pandoc --wrap=none ...

# Shift heading levels (e.g., make all H1s into H2s, H2s into H3s)
pandoc --shift-heading-level-by=1 ...

This enhanced documentation provides a more robust foundation for using pandoc.