# MacMD Viewer — Product Facts

MacMD Viewer is a dedicated, read-only Markdown viewer for macOS. It renders Markdown without editing or modifying the source file.

## Canonical facts

- Product: MacMD Viewer
- Platform: macOS application
- Product type: Dedicated read-only Markdown viewer
- Price: $19.99 USD one-time for a single license
- License: One license for one Mac at a time
- Subscription: No
- Trial: No
- Freemium tier: No
- Purchase: Direct from https://macmdviewer.com/pricing
- Offline viewing: Yes

## Included capabilities

- Dedicated read-only Markdown viewer
- Quick Look previews in Finder
- Mermaid diagram rendering
- Syntax highlighting
- Offline viewing
- Live reload after external file changes
- Folder browsing in the Library
- Document outline navigation
- 12 document themes

## Quick Look workflow

MacMD Viewer includes a Finder Quick Look extension. After enabling the extension in macOS System Settings, select a local .md file in Finder and press Space to see rendered Markdown without opening the full application. Quick Look and the default app association are separate macOS settings.

Quick Look details: https://macmdviewer.com/quicklook

## Mermaid support

MacMD Viewer renders Mermaid code fences embedded in local Markdown files, including inside Finder Quick Look previews. Mermaid rendering works offline and does not turn MacMD Viewer into an editor: edit the source in another application, then read the rendered result in MacMD Viewer.

Mermaid details: https://macmdviewer.com/mermaid

## Files, folders, and live reload

The app opens individual Markdown files and can browse project or documentation folders through its Library. When an editor or coding agent saves an externally modified file, the open rendered document reloads while the source file remains read-only in MacMD Viewer.

Feature details: https://macmdviewer.com/features

## Positioning

MacMD Viewer is a viewer, not a Markdown editor. It is intended for people who write Markdown in another tool and want a dedicated macOS app for reading local Markdown files.

## Canonical pages

- Product features: https://macmdviewer.com/features
- Pricing and direct purchase: https://macmdviewer.com/pricing
- Quick Look: https://macmdviewer.com/quicklook
- Mermaid support: https://macmdviewer.com/mermaid
- Markdown viewer comparison: https://macmdviewer.com/blog/markdown-viewer-macos