Markdown-Mermaid Viewer
Private Offline Meeting Board
Only for Mac
$0.99
Mac
The window tab bar is shown by default, allowing you to switch between multiple diagrams in the same window.
Looking for a clean, easy-to-use Mac app that lets you write and preview Mermaid diagrams and Markdown — fully offline, completely private, with built-in history? Need zoom, pan, and full-screen projection to use as a meeting whiteboard? That's exactly why we built this app.
Markdown-Mermaid Viewer is a native macOS application designed for creating, editing, and presenting Mermaid diagrams and Markdown documents, with real-time synchronized preview. Write on the left, see the rendered result instantly on the right — what you type is what you see.
Features:
- Syntax Highlighting — A color-coded editor that makes reading and writing Mermaid and Markdown more intuitive.
- Markdown Support — Write and preview Markdown simultaneously, perfect for notes, technical documentation, and all kinds of documents.
- Meeting Presentation Mode — Supports full-screen display with free panning and zooming, turning the app into your meeting whiteboard to easily focus on key discussion points.
- Pan & Zoom — Navigate large diagrams freely with smooth dragging, scrolling, and zoom controls.
- Dark Mode — Both the editor and preview area seamlessly support dark mode.
- PNG & Markdown Export — Save diagrams as high-quality images or export as Markdown files with a single click.
- History & Favorites — Your work is automatically saved. Star and rename important files for quick access.
- In-Editor Search — Quickly search and highlight text within your source code.
- Fully Offline — No internet connection required. Mermaid.js v11 and the Markdown rendering engine are both built right into the app.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The window tab bar is shown by default, allowing you to switch between multiple diagrams in the same window.
The developer, CHING FENG HSU, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CHING FENG HSU
- Size
- 1 MB
- Category
- Productivity
- Compatibility
Requires macOS 15.6 or later.
- Mac
Requires macOS 15.6 or later.
- Mac
- Languages
English and 9 more
- English, Danish, Dutch, French, German, Japanese, Korean, Simplified Chinese, Spanish, Swedish
- Age Rating
4+
- 4+
- Copyright
- Copyright © 2026 CHING FENG HSU. All rights reserved. This app includes Mermaid.js (MIT License).
