Markdown is a plain-text formatting syntax: you write `# Heading`, `**bold**` or `- item` and it renders as structured formatting. It stays readable as raw text, which is why READMEs, documentation and notes are commonly written in it.

Yes. Choose Download PDF and the document is laid out as a real, paginated PDF with selectable text — not a screenshot. You can set A4 or Letter, portrait or landscape, margins, an optional document title and page numbers.

Yes. Download DOCX produces a genuine .docx file with real headings, lists, tables and formatting, so it opens and stays editable in Microsoft Word, LibreOffice and Google Docs.

Yes. Download HTML gives you a complete standalone page with the styling included, so it renders correctly when you open the file directly in a browser. It contains no application JavaScript.

Yes — use Upload .md or drag a .md or .markdown file onto the editor. The file is read locally in your browser; files up to 2 MB are accepted.

No. Editing, preview and every export run in your browser, and the draft is saved only to this browser’s local storage. Use Clear to remove that local copy at any time.

Yes. On small screens the editor and preview become two tabs you can switch between, and every export works the same way as on desktop.

Headings, bold, italic, strikethrough, links, images, ordered and unordered lists, task lists, blockquotes, inline code, fenced code blocks, tables and horizontal rules, following GitHub-flavoured Markdown.