SwiftDown
WYSIWYG Markdown Editor
Only for Mac
$3.99
Mac
Exports that match what you see. Full-color badges, README logos, and correctly sized images in your PDFs, plus flicker-free switching between editor and preview.
Write Markdown the way it looks. Inline WYSIWYG editing, live split preview, LaTeX math, Mermaid diagrams and code highlighting — fully offline and native to macOS.
SwiftDown is a native Markdown editor for macOS. Edit your documents inline and see them rendered as you type, or switch to a classic split view with synchronized scrolling. Everything — preview, code highlighting, math and diagrams — works offline.
FOUR VIEW MODES
• Inline (⌘1): WYSIWYG editing, right in the rendered document
• Source (⌘2): plain Markdown with syntax coloring
• Split (⌘3): source on the left, live preview on the right, scrolling in sync
• Preview (⌘4): clean rendered output
• ⌘/ jumps between your two most recent modes and keeps your place
Each file remembers the mode you last used.
NAVIGATE LONG DOCUMENTS
• Outline sidebar (⌃⌘S) lists every heading — click to jump
• Fold sections under a heading, and promote or demote with ⌃⌘↑ / ⌃⌘↓
RICH MARKDOWN SUPPORT
• Bold, italic, strikethrough, inline code and links
• Bulleted, numbered and nested lists
• Task lists with clickable checkboxes
• Blockquotes and horizontal rules
• Tables you can edit in place, adding rows and columns with a click
• README-ready HTML: centered logos, badges, collapsible details blocks and HTML tables
IMAGES THAT JUST WORK
• Paste a screenshot or drag in an image — it's saved to a "YourDocument.assets" folder and linked with a relative path
• Local images with relative paths, plus images from the web
• Click to view images and diagrams full size
FOR TECHNICAL WRITING
• Syntax highlighting for fenced code blocks
• LaTeX math, both inline and block
• Mermaid flowcharts and diagrams rendered live, with a zoomable viewer
• Export to PDF (⇧⌘E)
WORKS WITH FINDER
• Quick Look: press Space on any .md file to see it rendered
• Rendered Markdown thumbnails in Finder
A FAST, FOCUSED EDITOR
• Floating formatting toolbar appears when you select text
• Full keyboard shortcuts for formatting, lists, tables, links and images
• Find and Replace
• Zoom in and out (⌘+ / ⌘- / ⌘0)
• Customize fonts, font size, line height and colors for light and dark appearance — the editor and preview stay in step
• Use a separate font for Source mode, such as a monospaced font
RELIABLE WITH YOUR FILES
• Edited elsewhere? SwiftDown reloads the file automatically and never overwrites your unsaved changes without asking
• Automatic encoding detection; saving keeps the original encoding and line endings
• Multi-megabyte documents open smoothly, with parsing in the background so typing never stalls
• All rendering resources ship inside the app — no account, no tracking, no internet required
Press ⌘N to start writing, or ⌘O to open an existing Markdown file.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Remote images, including shields.io badges, are rasterized before printing, so badges keep their colors instead of turning into dark blocks.
- Local images inside raw HTML are now embedded in both the preview and exported PDFs.
- Width and height set on img tags are respected, so logos no longer fill the whole page. Images without a size keep their natural point size on Retina displays.
- Dangerous sources like `javascript:`, `data:`, and `file:` in raw HTML are still stripped before anything is embedded.
The developer, Grand Penway, 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
- Beijing Grand Penway technology Ltd
- Size
- 9.4 MB
- Category
- Productivity
- Compatibility
Requires macOS 15.0 or later.
- Mac
Requires macOS 15.0 or later.
- Mac
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Grand Penway Technology Ltd

