MD Convert

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  MD Convert homepage for converting 16 document formats into clean Markdown directly in your browser with zero uploads.

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  Fast client-side PDF to Markdown converter using PDF.js. Extracts text layers locally in Web Workers with full data privacy.

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  Convert Jupyter Notebooks (.ipynb) to Markdown in browser without Python or kernels, parsing JSON code and prose cells locally.

Inspiration

Working with Markdown is essential for modern technical writing, note-taking in Obsidian/Notion, and documentation. However, most online converters require uploading sensitive files to cloud servers or suffer from slow processing. We wanted to build a completely private, blazingly fast converter that runs 100% inside the user's browser.

What it does

MD Convert is an all-in-one web utility that converts 16 different file formats into clean, structured Markdown (.md).

• Supported Formats: HTML, DOCX, Excel (XLSX), CSV, TSV, Web URLs, Evernote exports (.enex), XML, YAML, Jupyter Notebooks (.ipynb), and PDFs.
• 100% Data Privacy: Files are processed entirely on your local machine using the browser's FileReader API and Web Workers. No content is ever sent over the internet.
• Offline Capability: Once loaded, MD Convert works seamlessly without an internet connection.

How we built it

The application is built using vanilla web technologies optimized for client-side execution:

• Turndown: For parsing and cleaning HTML into Markdown.
• Mammoth.js: For converting Microsoft Word (.docx) documents.
• SheetJS: For extracting structured tabular data from Excel and CSV/TSV spreadsheets.
• PDF.js: For streaming PDF page data and parsing text layout.
• Web Workers: To handle memory-intensive file conversions in background threads without freezing the browser UI.

Try it out

You can use the tool right now completely free without creating an account: 👉 https://md-convert.org/

Built With

• file-converter
• html5
• javascript
• markdown
• pdf-js
• sheetjs
• turndown
• web-workers