A document converter based on Microsoft's MarkItDown library that turns more than 15 file types into Markdown, a plain-text format for structured documents.

Use it to convert PPTX, XLSX, EPUB, HTML, IPYNB, CSV, ZIP, and similar files to Markdown, including tables in PDFs.

It lets a coding agent read presentations, spreadsheets, ebooks, webpages, images, notebooks, archives, and other files in a consistent format.

markitdown — Skill for Claude Code and Codex by phanghonghao

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add phanghonghao/THU-Awesome-Skills --skill markitdown

Clone the repo

git clone --depth 1 https://github.com/phanghonghao/THU-Awesome-Skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/phanghonghao/thu-awesome-skills/markitdown/github.svg)](https://agentmods.dev/skills/phanghonghao/thu-awesome-skills/markitdown)

Your own site

<a href="https://agentmods.dev/skills/phanghonghao/thu-awesome-skills/markitdown"><img src="https://agentmods.dev/badge/skills/phanghonghao/thu-awesome-skills/markitdown/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/phanghonghao/thu-awesome-skills/markitdown"><img src="https://agentmods.dev/badge/skills/phanghonghao/thu-awesome-skills/markitdown.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,427 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00086	$0.01427
Opus 5.5	$0.00034	$0.00571
Sonnet 5.5	$0.00017	$0.00285
Haiku 4.5	$0.00009	$0.00143

Measured 2mo ago against content hash 0c9c41a64810, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

markitdown scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/markitdown/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Markitdown Skill (microsoft/markitdown)

Microsoft's markitdown converts 15+ file formats to Markdown. This skill covers formats not handled by /pdf-reader and /word2md — primarily PPTX, XLSX, EPUB, HTML, and more.

When to Use

User mentions: "markitdown", "/markitdown", "convert to markdown"
Need to read PPTX, XLSX, EPUB, IPYNB, ZIP — these are NOT covered by /pdf-reader or /word2md
Need table-aware PDF extraction (markitdown detects tables, /pdf-reader does not)
User says "PPTX to markdown", "Excel to markdown", "EPUB to markdown"
Quick one-shot conversion of any document to Markdown

When NOT to Use (use other skills instead)

Format	Better skill	Reason
PDF (reading)	`/pdf-reader`	PyMuPDF has 3 modes, higher fidelity, dict mode for LaTeX conversion
DOCX (with math)	`/word2md`	Correct OMML→LaTeX; markitdown has escaped-underscore bug (`\_{c}` instead of `_{c}`)
DOCX (with images)	`/word2md`	Extracts images to files; markitdown embeds base64 data URIs

Supported Formats

PDF, DOCX, PPTX, XLSX, HTML, EPUB, Images (via LLM caption or EXIF), IPYNB, CSV, Plain text, ZIP (processes contents), Audio/Video (transcription via Azure), Outlook MSG, RSS, Wikipedia, YouTube (transcript).

Installation

python -m pip install markitdown 2>&1 | tail -3

Usage

CLI (recommended for single files)

# Convert to stdout
PYTHONIOENCODING=utf-8 markitdown "<INPUT_FILE>" 2>/dev/null

# Convert and save to file
PYTHONIOENCODING=utf-8 markitdown "<INPUT_FILE>" -o "<OUTPUT.md>" 2>/dev/null

# Pipe from stdin
PYTHONIOENCODING=utf-8 markitdown -x pptx < "<INPUT_FILE>" 2>/dev/null

Python API (for batch or programmatic use)

PYTHONIOENCODING=utf-8 python -c "
from markitdown import MarkItDown
import sys

md = MarkItDown()
result = md.convert(sys.argv[1])
print(result.text_content)
" "<INPUT_FILE>"

Batch conversion (multiple files)

Read the full file on GitHub · 142 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 142 lines · 86 tokens per session scan A 0c9c41a64810

Subscribe to this mod's changes

markitdown is a skill published in the GitHub repository phanghonghao/THU-Awesome-Skills (8 stars, last pushed 3mo ago), licensed MIT. It adds 86 tokens to every session and 1,427 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Documents

markitdown next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
markitdownphanghonghao/THU-Awesome-Skills	Skill	8	3mo ago	MIT	A	86	Claude Code, Codex
orbit-notionnexu-io/open-design	Skill	107k	today	Apache-2.0	A	117	Claude Code, Codex
instrument-data-to-allotropeanthropics/knowledge-work-plugins	Skill	35k	yesterday	Apache-2.0	A	123	Claude Code
apify-youtube-transcript-scrapersickn33/agentic-awesome-skills	Skill	49k	yesterday	MIT	A	48	Claude Code
legal-holdanthropics/claude-for-legal	Skill	9.9k	yesterday	Apache-2.0	A	68	Claude Code
report-to-pdfasgeirtj/system_prompts_leaks	Skill	71k	yesterday	CC0-1.0	A	17	Claude Code, Codex
artifact-template-minimal-letterheadasgeirtj/system_prompts_leaks	Skill	71k	yesterday	CC0-1.0	A	54	Claude Code, Codex