myMDnotes

Documentation

Learn how to use myMDnotes to preview, edit, export, and share your Markdown documents.

Getting Started

  1. Upload a file — Drag and drop any .md file onto the landing page, or click to browse.
  2. Preview — Your markdown is rendered immediately with all Mermaid diagrams, SVG illustrations, and math equations visualized.
  3. Edit — Switch to Edit mode to use the split-view editor with live preview.
  4. Export — Download individual diagrams as high-quality PNG, or export the entire document as HTML or PDF.
  5. Share — Copy the unique URL to share your document with anyone, on any device.

Supported Syntax

Markdown

Full GitHub Flavored Markdown (GFM) support including tables, task lists, strikethrough, and autolinks.

Mermaid Diagrams

Wrap your Mermaid code in a fenced code block with the language set to mermaid. All Mermaid v11 diagram types are supported including flowcharts, sequence diagrams, class diagrams, ER diagrams, Gantt charts, and more.

SVG Illustrations

Inline SVG elements in your markdown are rendered directly and can be downloaded as high-quality PNG files.

Math (KaTeX)

Inline math with $...$ and block math with $$...$$.

Editor Controls

The controls bar below the navigation provides:

  • Font size — Adjust the editor font size up or down
  • Word wrap — Toggle line wrapping in the editor
  • Line numbers — Show or hide line numbers
  • Zoom — Zoom the preview pane in or out
  • Fullscreen — Expand the preview to fullscreen
  • Share — Copy the document's shareable URL

Diagram Downloads

Every Mermaid diagram, inline SVG, and image in your document has a download overlay. Hover over any illustration on desktop (or tap on mobile) to reveal the PNG download button. Diagrams are exported at 2x resolution for crisp, presentation-ready output.

Resizable Split View

In Edit mode on desktop, drag the vertical separator between the editor and preview panes to adjust their widths. Your preferred ratio is remembered across sessions.

Sharing Documents

Every document gets a unique URL based on its content hash. Short documents encode their content directly in the URL fragment, meaning the recipient doesn't need to have the file stored locally. Click the share button in the controls bar to copy the URL to your clipboard.

Export Options

PDF — Full-fidelity PDF export with pre-rendered diagrams. Perfect for documentation and reports.

HTML — Self-contained HTML file with inline styles. Great for sharing via email or embedding.

PNG — Individual diagram downloads at 2x resolution. Ideal for presentations and slide decks.