Markdown is a lightweight markup language created by John Gruber in 2004. It lets you write formatted text using plain characters: asterisks for bold and italic, hashes for headings, dashes for lists, and backticks for code. It is the standard format for README files on GitHub, documentation sites, static site generators like Jekyll and Hugo, and note-taking apps like Obsidian. Because Markdown files are plain text, they work with any editor and are easy to version-control with Git.

This tool offers three export formats. Download as .md to save your raw Markdown source file, which you can open in any text editor or Markdown app. Export as .html to get a self-contained HTML page with embedded styles, useful for sharing a rendered document via email or hosting it on a simple web server. Export as PDF to create a print-ready document that preserves the exact styling you see in the preview, including your chosen theme, font, and size settings.

Use the theme selector to switch between light and dark modes, or leave it on auto to match your system preference. The font selector lets you choose between sans-serif for readability, serif for a more traditional document feel, or monospace for a code-focused look. Adjust the size setting to find a comfortable reading scale. All of these settings carry over to Zen Mode and PDF exports, so what you see in the preview is exactly what you will get in your exported files.