Double-click. Read. That’s it.

A Markdown viewer that’s actually a Mac app. Free and open source.

JustMD is a Mac app — this link opens the App Store on your Mac.

Download on the Mac App StoreDirect download (.dmg)Star on GitHub

macOS Tahoe 26.2+ · Free · MIT

JustMD in dark mode: a rendered checklist with neon headings on the left, its raw Markdown on the right.JustMD in light mode: the same checklist on warm paper, raw Markdown on the right.

Everything a viewer needs.
Nothing it doesn’t.

  • Opens from Finder

    Double-click any .md file. Or drag it in. Or ⌘O.

  • Tabs

    Keep a whole folder of docs open in one window.

  • Preview + source

    Rendered on the left, raw Markdown on the right, refreshed the moment you save in your editor. Hide the source when you don’t need it.

  • The Markdown you actually write

    Tables, task lists, strikethrough, footnotes, images, and fenced code with highlighting for Swift, Python, JavaScript, TypeScript, JSON, Bash and CSS.

  • Two moods

    Neon on black at night, warm paper by day. Follows your system appearance.

  • Private by design

    Sandboxed and read-only. No analytics, no accounts, nothing to sign in to. It only goes online to load images your documents link to.

JustMD in dark modeThe same file in JustMD's light mode

Same file. Your Mac decides.

It doesn’t edit. It doesn’t sync. It doesn’t ask you to sign in. It opens Markdown.

That’s the whole idea.

Built in the open.

Read the code, file an issue, send a pull request. Swift, no dependencies you’d be embarrassed by.

kaanses / JustMDPublicStar

A lightweight, native Markdown viewer for macOS. SwiftUI + AppKit, sandboxed, no tracking.

SwiftMIT license

Open your first file.

JustMD is a Mac app — this link opens the App Store on your Mac.

Download on the Mac App StoreDirect download (.dmg)Star on GitHub