Mdown: Markdown Previewer
No in-app products collected for this app.
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Description
Mdown opens a Markdown file and renders it. That is the whole product — no account, no subscription, no network.
WORKS OFFLINE, AND CANNOT DO OTHERWISE
Mdown ships without the network permission. This is not a promise about data collection: the app has no way to reach the internet at all. Every syntax grammar, every font and both diagram engines live inside the binary, so a README opens exactly as fast on a plane as it does at your desk.
WHAT IT RENDERS
GitHub Flavored Markdown — tables, footnotes, task lists, blockquotes, HTML blocks
Syntax highlighting for 192 languages, all bundled, none downloaded
Mermaid diagrams: flowcharts, sequence, state, class
LaTeX through KaTeX, both display and inline equations
YAML and TOML front matter, folded into a card instead of leaking into the text
Documents of 10,000 lines open in well under a second
EVERYTHING IS FREE
Nine themes — GitHub, GitHub Dark, Solarized Light, Solarized Dark, Nord, Gruvbox Dark, Dracula, Sepia and High Contrast. Serif, sans or rounded body text, four monospaced faces for code, and a separate theme for syntax highlighting if you want the code to look different from the page.
Column width, line height, letter spacing, paragraph spacing and page margins are yours to set. A narrow measure suits reference material you scan; a wider one suits prose you read from the top. Nothing here is behind a purchase, because there are no purchases.
BUILT FOR READING, NOT EDITING
Find in the rendered document with a real match counter — not a search of the raw source
Contents panel with the actual heading hierarchy, collapsible, marking where you are
Press Space to flip between the rendered page and the source
Your reading position is remembered per file, and survives a change of font or width
Status bar with word count, reading time, zoom and theme
BESIDE YOUR EDITOR
Save the file in VS Code, Cursor, Zed or anything else, and Mdown re-reads it immediately, keeping your place, your selection and your search. Press ⌘E to hand the file back to your editor. Mdown never writes to your files — it is a reader, and it stays one.
On macOS, press Space on a Markdown file in the Finder and Quick Look draws it with the same renderer, without launching the app at all.
EXPORT AND PRINT
PDF with your current theme and working links, single-file HTML with styles inlined, or the system print dialog. What you print looks like what you read.
ONE APP, THREE PLATFORMS
Universal for Mac, iPad and iPhone. On iPad the contents panel sits beside the document; on iPhone it slides over. The interface is translated into 39 languages.
WHAT MDOWN DOES NOT DO
It does not edit files. It does not sync, or offer an account, or open a browser. It has no analytics, no ads, no in-app purchases and no telemetry of any kind. It does not show a how-to document on launch.
Open source under the MIT licence.