Free Online Markdown to PDF Converter
Paste or upload Markdown and download a paginated PDF, with code highlighting, tables, and Mermaid diagrams included. No login, no watermark.
Updated July 3, 2026
Markdown to PDF conversion renders Markdown, including headings, tables, syntax-highlighted code, and Mermaid diagrams, into a paginated PDF document ready to print, email, or archive. MDTool generates the PDF entirely in your browser, from the same rendered HTML you see in the live preview, so nothing gets lost between preview and export. It is free, with no signup and no file size limit.
How Do You Convert Markdown to PDF?
- Paste your Markdown text in the left panel, or click Upload .md to load a file
- Choose a PDF theme: GitHub, Academic, Minimal, or Dark
- See the live preview update in real-time on the right
- Click Download PDF, Free to save your file
Why Do Some Markdown to PDF Converters Lose Formatting?
Two things separate a Markdown-to-PDF converter that “technically works” from one that produces a document you'd actually send to someone: syntax-highlighted code, and rendered Mermaid diagrams. Both fail in most tools for the same underlying reason.
A Mermaid block like ```mermaid isn't a diagram yet; it's text that has to be parsed and rendered into SVG before anything can capture it as a page. Tools that generate the PDF through a different code path than the one used for the on-screen preview often skip that rendering step entirely, so the diagram block either disappears or prints as raw, uninterpreted text. MDTool initializes the Mermaid renderer in the browser and waits for it to finish drawing the SVG before the PDF engine captures the page, so the diagram in your PDF is the same one you see in the live preview. The PDF itself is built with pdfmake, a true vector engine, so text stays selectable and searchable instead of being rasterized into images.
| Theme | Best for |
|---|---|
| GitHub | READMEs and developer documentation |
| Academic | Papers, reports, and formal write-ups |
| Minimal | Clean, modern general-purpose documents |
| Dark | Dark-background reading and screen sharing |
Syntax highlighting breaks for a similar reason: a tool might highlight code in its browser preview using one renderer, then generate the PDF server-side using a separate Markdown parser that never applies highlight.js's color classes. Because MDTool's PDF is generated directly from the same rendered HTML you see on screen, there's no second conversion step where highlighting can get lost.
Frequently Asked Questions
Yes. MDTool fully supports GitHub Flavored Markdown including tables, task lists, strikethrough, fenced code blocks with syntax highlighting, and autolinks.