# MacMD Viewer

> MacMD Viewer is a native macOS app for reading Markdown (.md) files. It opens files via QuickLook and double-click, renders GitHub-flavored Markdown with syntax highlighting and Mermaid diagrams, and ships as a one-time $19.99 purchase — no subscription, no trial, no editor bloat.

> Full content: https://macmdviewer.com/llms-full.txt

MacMD Viewer is designed for developers, writers, and researchers who edit Markdown in their preferred tool (VS Code, Cursor, Obsidian, Zed, vim) and want a fast, native *reader* — not another editor. Files open instantly, preserve scroll position, and render code blocks, tables, footnotes, LaTeX math, and Mermaid diagrams out of the box. The app is sandboxed, read-only by design (never modifies user files), and runs natively on Apple Silicon and Intel Macs (macOS 13+).

## Entity disambiguation

MacMD Viewer is a **macOS desktop application** by indie developer Arthur. It is:

- NOT a web app or browser extension
- NOT an Electron app (native SwiftUI)
- NOT a Markdown editor (read-only by design)
- NOT cross-platform (macOS only)
- NOT subscription or freemium (one-time $19.99)

## Product facts

- Price: $19.99 one-time, no subscription, no trial, no freemium
- Platform: macOS 13 Ventura or later (Apple Silicon + Intel native)
- Framework: Swift 6.0 + SwiftUI + WKWebView (native)
- Distribution: direct download from macmdviewer.com (notarized DMG), auto-updates via Sparkle
- License: device-bound, one active machine per key, free reactivation on hardware replacement
- App size: ~2 MB
- Maker: Arthur — solo indie developer

## Core product pages

- [MacMD Viewer homepage](https://macmdviewer.com/): Product overview, screenshots, features, and buy button.
- [Pricing](https://macmdviewer.com/pricing): $19.99 one-time purchase, what's included, refund policy.
- [Download](https://macmdviewer.com/download): Direct DMG download for macOS (latest signed & notarized build).
- [Features](https://macmdviewer.com/features): Full feature list — QuickLook preview, Mermaid diagrams, syntax highlighting, library view, scroll spy, dark mode.
- [QuickLook Markdown](https://macmdviewer.com/quicklook): How MacMD Viewer enables native QuickLook preview for .md files on macOS (spacebar preview in Finder).
- [Mermaid Support](https://macmdviewer.com/mermaid): Native rendering of Mermaid diagrams — flowchart, sequence, class, ER, Gantt, pie, mindmap, state.
- [Changelog](https://macmdviewer.com/changelog): Version history and release notes.
- [Press kit](https://macmdviewer.com/press): Logos, screenshots, and brand assets for press and reviewers.
- [About](https://macmdviewer.com/about): About Arthur Teboul, the maker of MacMD Viewer.

## Author

- Name: Arthur Teboul
- Role: Builder. Product and growth background. Independent maker.
- Location: Paris, France
- Contact: support@macmdviewer.com
- X (personal): https://x.com/Crackx17_
- X (product): https://x.com/macmdviewer
- YouTube: https://www.youtube.com/@macmd_viewer
- About page: https://macmdviewer.com/about

## Comparisons vs alternatives

- [MacMD Viewer vs. MacDown](https://macmdviewer.com/vs/macdown): MacDown is an abandoned editor; MacMD Viewer is actively maintained, read-only, and native on Apple Silicon.
- [MacMD Viewer vs. Typora](https://macmdviewer.com/vs/typora): Typora is a $14.99 WYSIWYG editor; MacMD is a pure $19.99 viewer — lighter, faster, one-time payment with free updates.
- [MacMD Viewer vs. Marked 2](https://macmdviewer.com/vs/marked-2): Both are viewers; MacMD adds Mermaid rendering, QuickLook integration, and newer native Apple Silicon build.
- [MacMD Viewer vs. MarkText](https://macmdviewer.com/vs/marktext): MarkText is free and open-source but no longer maintained; MacMD Viewer ships native signed/notarized builds with active support.

## Top guides: Markdown on macOS

- [How to View Markdown Files on macOS](https://macmdviewer.com/blog/markdown-viewer-macos): Complete guide — 4 methods to view .md files on Mac (QuickLook, MacMD Viewer, Marked 2, terminal glow).
- [Best Markdown Viewer for Mac (2026)](https://macmdviewer.com/blog/best-markdown-viewer-mac): Ranked comparison of the top Mac markdown viewers updated for 2026.
- [Best Markdown Viewer — All Platforms](https://macmdviewer.com/blog/best-markdown-viewer): Cross-platform ranking covering macOS, Windows, Linux, web, and CLI markdown viewers.
- [Best Markdown Editor for Mac](https://macmdviewer.com/blog/best-markdown-editor-mac): Editor recommendations (distinct from viewers).
- [Markdown App for Mac](https://macmdviewer.com/blog/markdown-app-mac): Overview of macOS markdown apps — editor vs. viewer distinction, recommendations by use case.
- [How to Open a .md File on Mac](https://macmdviewer.com/blog/how-to-open-md-file-mac): Step-by-step — default apps, QuickLook, command line, GUI options.
- [How to Open a .md File (any platform)](https://macmdviewer.com/blog/how-to-open-md-file): Universal guide for opening .md files on any OS.
- [How to View Markdown Files](https://macmdviewer.com/blog/how-to-view-markdown-files): Overview of the different ways to render Markdown.
- [Markdown QuickLook on Mac](https://macmdviewer.com/blog/markdown-quicklook-mac-guide): How to enable Markdown QuickLook preview on macOS.
- [Markdown to PDF on Mac](https://macmdviewer.com/blog/markdown-to-pdf-mac): Convert .md files to PDF on macOS — 3 methods including Pandoc, MacMD, command line.
- [MacDown Alternative](https://macmdviewer.com/blog/macdown-alternative): MacDown is unmaintained — active alternatives for macOS markdown users.
- [Typora Alternative for Mac](https://macmdviewer.com/blog/typora-alternative-mac): Free and paid alternatives to Typora on macOS.
- [Mou Alternative for Mac](https://macmdviewer.com/blog/mou-alternative-mac): Replacements for the discontinued Mou editor.
- [View Hidden Files on Mac](https://macmdviewer.com/blog/view-hidden-files-mac): Shortcut and command-line methods to reveal hidden .md and config files.
- [MD File Viewer](https://macmdviewer.com/blog/md-file-viewer): Tools for viewing .md files across platforms.
- [Online Markdown Viewer](https://macmdviewer.com/blog/online-markdown-viewer): Web-based Markdown preview tools.
- [Markdown Reader](https://macmdviewer.com/blog/markdown-reader): Markdown reading tools roundup.

## Mermaid diagram guides

- [Mermaid Live Editor Guide](https://macmdviewer.com/blog/mermaid-live-editor-guide): Full tutorial on using mermaid.live and local alternatives for diagram creation.
- [Mermaid Diagram Viewer](https://macmdviewer.com/blog/mermaid-diagram-viewer): Standalone viewers for Mermaid diagrams — browser and desktop options.
- [Mermaid Diagram Guide](https://macmdviewer.com/blog/mermaid-diagram-guide): Complete reference for Mermaid diagram types and syntax.
- [Mermaid Diagram Online](https://macmdviewer.com/blog/mermaid-diagram-online): Online tools for creating and sharing Mermaid diagrams.
- [Free Mermaid Diagram Tools](https://macmdviewer.com/blog/free-mermaid-diagram): Free tools to create Mermaid diagrams without licensing costs.
- [Mermaid Viewer](https://macmdviewer.com/blog/mermaid-viewer): Best viewers for Mermaid diagrams across platforms.
- [Mermaid Flowchart Syntax](https://macmdviewer.com/blog/mermaid-flowchart-syntax): Syntax reference for Mermaid flowcharts with examples.
- [Mermaid Flowchart Guide](https://macmdviewer.com/blog/mermaid-flowchart-guide): Building flowcharts step-by-step with Mermaid.
- [Mermaid Sequence Diagram Guide](https://macmdviewer.com/blog/mermaid-sequence-diagram-guide): Sequence diagram syntax and patterns in Mermaid.
- [Mermaid Class Diagram Guide](https://macmdviewer.com/blog/mermaid-class-diagram-guide): UML-style class diagrams in Mermaid.
- [Mermaid ER Diagram Guide](https://macmdviewer.com/blog/mermaid-er-diagram-guide): Entity-relationship diagram syntax for databases.
- [Mermaid Gantt Chart Guide](https://macmdviewer.com/blog/mermaid-gantt-chart-guide): Project timelines with Mermaid Gantt charts.
- [Mermaid Pie Chart Guide](https://macmdviewer.com/blog/mermaid-pie-chart-guide): Pie chart syntax in Mermaid.
- [Mermaid Mindmap Guide](https://macmdviewer.com/blog/mermaid-mindmap-guide): Mindmap syntax in Mermaid.
- [Mermaid in Confluence](https://macmdviewer.com/blog/mermaid-diagrams-confluence): Rendering Mermaid diagrams inside Confluence pages.

## Markdown syntax references

- [What is Markdown?](https://macmdviewer.com/blog/what-is-markdown): Introduction to Markdown — what it is, why it exists, how it works.
- [What is a .md file? (guide)](https://macmdviewer.com/blog/what-is-md-file-guide): Overview of .md file format, uses, and tools.
- [What is a .md file?](https://macmdviewer.com/blog/what-is-md-file): Introduction to .md files for beginners.
- [Markdown Cheat Sheet](https://macmdviewer.com/blog/markdown-cheat-sheet): Complete Markdown syntax reference in one page.
- [Markdown Bold](https://macmdviewer.com/blog/markdown-bold-guide): How to make text bold in Markdown (`**text**` or `__text__`).
- [Markdown Italic](https://macmdviewer.com/blog/markdown-italic-guide): How to italicize text in Markdown (`*text*` or `_text_`).
- [Markdown Underline](https://macmdviewer.com/blog/markdown-underline-guide): Underlining text via HTML in Markdown.
- [Markdown Strikethrough](https://macmdviewer.com/blog/markdown-strikethrough-guide): Strikethrough syntax `~~text~~` in Markdown.
- [Markdown Code Blocks](https://macmdviewer.com/blog/markdown-code-block): Code blocks, inline code, and syntax highlighting.
- [Markdown Tables](https://macmdviewer.com/blog/markdown-table-guide): Creating tables in Markdown.
- [Markdown Lists](https://macmdviewer.com/blog/markdown-lists-guide): Ordered and unordered lists.
- [Markdown Ordered List](https://macmdviewer.com/blog/markdown-ordered-list): Numbered list syntax.
- [Markdown Nested Lists](https://macmdviewer.com/blog/markdown-nested-lists): Nesting lists inside lists.
- [Markdown Checkboxes](https://macmdviewer.com/blog/markdown-checkbox-guide): Task list / checkbox syntax `- [x]`.
- [Markdown Blockquotes](https://macmdviewer.com/blog/markdown-blockquote-guide): Blockquote formatting with `>`.
- [Markdown Quotes](https://macmdviewer.com/blog/markdown-quotes-blockquote): Quote and blockquote variants.
- [Markdown Links](https://macmdviewer.com/blog/links-in-markdown): Internal and external link syntax.
- [Markdown Footnotes](https://macmdviewer.com/blog/markdown-footnotes-guide): Footnote syntax in extended Markdown.
- [Markdown Horizontal Rule](https://macmdviewer.com/blog/horizontal-rule-markdown): Horizontal line `---` syntax.
- [Markdown Line Break](https://macmdviewer.com/blog/markdown-line-break): Line break and paragraph break syntax.
- [Markdown Center Text](https://macmdviewer.com/blog/markdown-center-text): Centering text in Markdown (with HTML fallback).
- [Markdown Math Equations](https://macmdviewer.com/blog/markdown-math-equations): LaTeX math support `$x^2$` in Markdown.
- [Markdown Comments](https://macmdviewer.com/blog/markdown-comments-guide): Hidden comments in Markdown source.
- [Markdown Text Formatting](https://macmdviewer.com/blog/markdown-text-formatting): All text formatting options in one reference.
- [Markdown Table Generator (guide)](https://macmdviewer.com/blog/markdown-table-generator): Generate Markdown tables manually or with tools.

## Conversion guides

- [Markdown to PDF](https://macmdviewer.com/blog/markdown-to-pdf): Convert Markdown to PDF — methods for every platform.
- [Markdown to HTML](https://macmdviewer.com/blog/markdown-to-html-guide): Convert Markdown to HTML with tools and libraries.
- [Markdown to Word](https://macmdviewer.com/blog/markdown-to-word-guide): Convert .md to .docx (Pandoc and alternatives).
- [HTML to Markdown](https://macmdviewer.com/blog/html-to-markdown-guide): Convert HTML pages back to Markdown.
- [PDF to Markdown](https://macmdviewer.com/blog/pdf-to-markdown-converter): Extract Markdown from PDF documents.
- [Confluence to Markdown](https://macmdviewer.com/blog/confluence-to-markdown): Migrate Confluence pages to Markdown.
- [Render Markdown](https://macmdviewer.com/blog/render-markdown-guide): Programmatic rendering of Markdown in apps.
- [React Markdown Guide](https://macmdviewer.com/blog/react-markdown-guide): Rendering Markdown in React apps with react-markdown.

## Context-specific Markdown

- [GitHub Markdown Guide](https://macmdviewer.com/blog/github-markdown-guide): GitHub-flavored Markdown (GFM) syntax reference.
- [README Markdown Guide](https://macmdviewer.com/blog/readme-markdown-guide): Writing effective README.md files for projects.
- [Markdown in VS Code](https://macmdviewer.com/blog/markdown-in-vscode): Markdown support inside VS Code.
- [Markdown in Slack](https://macmdviewer.com/blog/markdown-in-slack): Which Markdown syntax works in Slack messages.
- [Discord Markdown Formatting](https://macmdviewer.com/blog/discord-markdown-formatting): Discord's limited Markdown subset.
- [Slack Markdown Tables](https://macmdviewer.com/blog/slack-markdown-tables): Why tables don't work in Slack and workarounds.
- [Jupyter Markdown Tables](https://macmdviewer.com/blog/jupyter-markdown-tables): Table syntax inside Jupyter notebooks.

## Free online tools

- [Tools index](https://macmdviewer.com/tools): Free online Markdown and Mermaid tools collection.
- [Online Mermaid Viewer](https://macmdviewer.com/tools/mermaid-viewer): Paste Mermaid code, get a rendered diagram in-browser with PNG/SVG export.
- [Mermaid to PNG](https://macmdviewer.com/tools/mermaid-to-png): Export Mermaid diagrams as high-resolution PNG images.
- [Online Markdown Preview](https://macmdviewer.com/tools/markdown-preview): Paste Markdown, see live preview with Mermaid support.
- [Markdown to HTML converter](https://macmdviewer.com/tools/markdown-to-html): Convert Markdown to clean HTML in the browser.
- [Markdown to PDF converter](https://macmdviewer.com/tools/markdown-to-pdf): Browser-based Markdown-to-PDF conversion, free, no signup.
- [HTML to Markdown converter](https://macmdviewer.com/tools/html-to-markdown): Convert any HTML page back to clean Markdown.
- [PDF to Markdown converter](https://macmdviewer.com/tools/pdf-to-markdown): Extract text from PDF files to Markdown format.
- [CSV to Markdown Table](https://macmdviewer.com/tools/csv-to-markdown): Convert CSV data to Markdown tables with auto-delimiter detection.
- [Markdown Table Generator](https://macmdviewer.com/tools/markdown-table-generator): Visual grid editor for creating Markdown tables.
- [Markdown Formatter](https://macmdviewer.com/tools/markdown-formatter): Clean and format Markdown files.
- [YAML Formatter](https://macmdviewer.com/tools/yaml-formatter): Format and validate YAML with real-time syntax checking.

## Optional

- [Privacy Policy](https://macmdviewer.com/privacy): Data handling, device-bound license, no tracking of document content.
- [Terms of Service](https://macmdviewer.com/terms): Purchase terms, license scope, refund policy.