Convert files to Markdown — free, online, and private

MarkItDown turns PDF, Word, PowerPoint, Excel, HTML and CSV files into clean Markdown using Microsoft’s markitdown library. Unlike most online converters, everything runs inside your browser with WebAssembly — your files are never uploaded to any server, and the tool keeps working offline after the first load.

Supported formats

• PDF → Markdown
• Word (DOCX) → Markdown
• PowerPoint (PPTX) → Markdown
• Excel (XLSX) → Markdown tables
• HTML, CSV, JSON and plain text → Markdown

How it works

1. Drop a file (or several) onto the page.
2. The converter loads once, then runs Microsoft markitdown locally in your browser.
3. Copy the Markdown or download a .md file. Nothing is sent anywhere.

Frequently asked questions

Are my files uploaded to a server?

No. markitdown runs entirely in your browser via WebAssembly (Pyodide). Files never leave your device.

Does it work offline?

Yes. The converter is cached locally on first use and then works without a network connection.

Is it free?

Yes — completely free, no account or sign-in required.

A focused micro-tool by Madian · part of the Madian tools collection.