Mdown: Markdown Previewer
README Highlighter, Offline
About
This app renders Markdown files offline, supporting GitHub Flavored Markdown, syntax highlighting for 192 languages, and Mermaid diagrams. It offers extensive customization for themes, fonts, and layout, with features for reading, exporting, and printing documents.
What's New in Mdown
1.1.0
August 10, 2026
Open a Markdown file straight from the Share sheet on iPhone and iPad. Text now follows your system font size, and a pinch resizes it. Files that aren't Markdown open as plain text with a clear notice, plus interface polish and minor bug fixes.
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FAQ
Does Mdown have ads?
No, Mdown is completely ad-free. The app explicitly states it has no ads, analytics, or telemetry of any kind, ensuring an uninterrupted user experience.
How often is Mdown updated?
The latest version is 1.1.0, released on August 10, 2026. While specific update frequency isn't detailed, the recent update suggests ongoing support and development.
What platforms is Mdown available on?
Mdown is a universal app available on Mac, iPhone, and iPad. The interface adapts to screen size, with the contents panel beside the document on iPad and sliding over on iPhone.
Can I edit Markdown files with Mdown?
No, Mdown is built for reading, not editing. It opens and renders Markdown files but does not allow modifications. You can export your rendered document to PDF or HTML.
Does Mdown require an internet connection?
No, Mdown works entirely offline. It does not request network permissions, and all rendering engines and grammars are bundled within the application binary.
What kind of Markdown features does Mdown support?
Mdown supports GitHub Flavored Markdown, including tables, footnotes, task lists, blockquotes, and HTML blocks. It also renders Mermaid diagrams and LaTeX equations.
Is Mdown suitable for viewing large documents?
Yes, Mdown is optimized for performance. Documents with up to 10,000 lines can be opened in well under a second.
What customization options are available in Mdown?
You can choose from nine themes, set body text styles (serif, sans, rounded), select from four monospaced fonts for code, and customize column width, line height, letter spacing, paragraph spacing, and page margins.