Fast native Markdown viewer & editor for macOS. Mermaid diagrams, Git history, LaTeX math, 180+ syntax languages, QuickLook, and PDF export. Free to start.
MDViewer — Fast Markdown Viewer & Editor for macOS
Open Markdown (.md), Mermaid and JSON files instantly with a fast, native macOS app built in SwiftUI.
MDViewer is a lightweight Markdown Viewer, Markdown Editor and Markdown Reader designed for developers, technical writers, students and anyone working with Markdown documents. Preview Markdown files with GitHub Flavored Markdown support, render Mermaid diagrams, view JSON files, export to PDF, and edit documents with a clean native macOS experience.
------ KEY FEATURES ------
Markdown Viewer & Reader
• Open and preview Markdown (.md) files instantly
• Full GitHub Flavored Markdown (GFM) support
• Tables, task lists, code blocks, images, links and more
• Fast native rendering optimized for macOS
Syntax Highlighting
• 180+ programming languages
• GitHub-style syntax highlighting
• Automatic Light and Dark Mode support
Table of Contents
• Auto-generated navigation from headings
• Smooth scroll synchronization
• Collapsible sections for large documents
Mermaid Diagram Viewer
• Render Mermaid diagrams directly from your files
• Flowcharts
• Sequence diagrams
• ER diagrams
• Gantt charts
• Fullscreen viewing and zoom support
LaTeX Math Rendering
• Powered by KaTeX
• Inline and block equations
• Matrices, integrals and advanced mathematical notation
JSON Viewer
• Open JSON files with an interactive tree view
• Expand and collapse nested objects
• Built-in formatting tools
Find in Document
• Instant search with highlighting
• Fast navigation through results
• Cmd+F support
QuickLook Integration
• Preview Markdown, Mermaid and JSON files directly in Finder
• Press Space to instantly view rendered content
Export to PDF
• Export Markdown, Mermaid and JSON files as beautifully rendered PDFs
• Perfect for sharing, printing and documentation
Code Block Copy Button
• Copy code snippets with one click
Multi-Tab Workspace
• Open multiple files at the same time
• Drag and drop files and folders
• Switch between documents quickly
Clickable URLs
• Automatically detect and open links
• Supports http, https, www and plain domains
File Tree Navigation
• Browse project folders from the sidebar
• Quickly open related files
Git History & Diffs
• View commit history
• Compare revisions
• Line-by-line diff visualization
Markdown Editor
• Edit Markdown with syntax highlighting
• Jump directly to any position
• Start editing instantly
Create New Files
• Create Markdown documents from scratch
• Not just a viewer — a complete Markdown editing workflow
Native macOS Experience
• Built with SwiftUI
• Fast, responsive and memory-efficient
• Supports Light and Dark Mode
• Powerful keyboard shortcuts
Default Markdown App
• Set MDViewer as the default app for .md files
Status Bar
• Word count
• Reading time estimates
• Zoom controls
Recent Files
• Quickly reopen recently used documents from the Dock or application menu
FREE & PRO
MDViewer is free with core functionality.
Upgrade to Pro with a one-time purchase to unlock:
• Markdown Editor
• Git History & Diffs
• File Tree Navigation
• Unlimited Tabs
• Multi-File Opening
• LaTeX Math Rendering
This app hasn’t received enough ratings or reviews to display an overview.
The best Markdown viewer so far!
EddyGeez!
I’ve been on a quest to find the ultimate *native* Markdown viewer for the Mac. I’ve spent the last couple weeks trying all sorts of free apps, open source viewers and other native Markdown readers. At the end of the day, MDViewer came out on top. Having a native Mac app is so much nicer than a “web wrapper”. Key features I was looking for were genuinely native feel, a project directory tree, automatically detection of newly created files in the tree, and automatic refresh of an already opened document. MDViewer does all this, and more. And the best part is that the developer actively updates the app regularly!
PDF Export is broken
x2+y2=z2
PDF Export is broken, it exports only 1st 12 pages, rest seems ok so far.
Developer Response
Update The fix is delivered in version 1.25. Huge files can now be exported easily. ------Thanks a lot for reporting! We'd love to fix the issue.With love ❤️, Crocopliers Team
- PDF export now includes local and remote images
- Floating PDF export button next to Edit in the viewer
Version 1.31
The developer, Crocopliers, 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 Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More