What is MarkEdit?
MarkEdit is a free, open-source Markdown editor for macOS — in the project's own words, just like TextEdit but dedicated to Markdown. The installer is about 4 MB, it handles million-line files, and it follows the GitHub Flavored Markdown specification strictly with no proprietary syntax. It is native: Shortcuts and AppleScript are supported, and the current build requires macOS 26.0 or later.
Verified product facts
- Type
- Markdown editorEditorially reviewed
- Platform
- macOS
- Pricing
- Open sourceDeveloper-stated
- Open source
- Yes
- Relationship to Nuanyue
- Third-party product — not published by NuanyueEditorially reviewed
- Licence
- MIT
- Official website
- tiny.cc/markedit
Last updated . Facts marked developer-stated come from the developer and are not independently confirmed; editorially reviewed marks a Nuanyue judgement.
Key features
What MarkEdit does at a glance.
Follows the GitHub Flavored Markdown specification strictly, with no proprietary syntax
Installer is about 4 MB, far smaller than Electron-based editors
Handles million-line files
Native macOS integration
With Shortcuts and AppleScript support
Built-in extension manager
For curated extensions
Multi-caret editing and code folding
Built on CodeMirror 6
What you can use MarkEdit for
- Editing a large Markdown file that slows down an Electron-based editor
- Writing Markdown while keeping macOS-native keyboard shortcuts and services
Who is MarkEdit for?
- Writers who want a small, native Markdown editor with no account
- Users who care that the renderer follows the GFM specification exactly
Who is MarkEdit not for?
- Macs running macOS 12 through 15 that need the current build — those get separately tagged releases
Strengths and trade-offs
What MarkEdit does well, and what to weigh before choosing it. Points marked developer-stated come from the developer’s own material and have not been independently confirmed.
Strengths
- Free and open source under the MIT licence, with no account and no paid tier.
- The installer is about 4 MB, which the project puts in contrast to Electron apps.
- Follows the GFM specification strictly, so Markdown that renders on GitHub renders the same way here.
- Native integration: Shortcuts and AppleScript are supported, and the controls stay native in behaviour as well as look.
Trade-offs
- The current build requires macOS 26.0 or later; older systems have to use the separately published macos-12 through macos-15 releases.
- There is no bundled live preview — previewing is one of the official extensions you have to install yourself.
- The project states it does not claim to be best in any single dimension, so it will not top a benchmark in every category.Developer-stated
What it does
MarkEdit is a Markdown editor built to look like the TextEdit you already have on a Mac, except that it only edits Markdown. The project’s stated aim is not to win any single benchmark but to balance four things at once: size, speed, native integration and correctness.
Two of those numbers are worth quoting exactly. The installer is about 4 MB — small enough that it does not need to be justified. And it edits million-line files, which is the case where TextKit-based editors start to struggle and Electron apps start to feel their weight.
Where it fits
The editor follows the GitHub Flavored Markdown specification strictly, with no proprietary syntax of its own. That matters if you write Markdown that is going to be rendered somewhere else: what you preview here is what GitHub renders. The project is explicit that it will not invent features to look different.
It is native in the ways that are easy to claim and hard to fake: Shortcuts and AppleScript are supported, and multi-caret editing and code folding are built on CodeMirror 6 rather than a web view. Extensions — including live preview, hiding syntax, visual table editing and AI writing — are installed through the built-in extension manager rather than shipped as one large binary.
One caveat worth knowing before installing: the current build requires macOS 26.0 or later. macOS 12 through 15 get their own tagged releases, which are published separately from the latest build.
Questions about MarkEdit
Is MarkEdit free?
Yes. It is free and open source under the MIT licence.
How large is the app?
The installer is about 4 MB.
How do I install MarkEdit?
Download MarkEdit.dmg from the latest GitHub release and drag the app to Applications, or run brew install --cask markedit.
Does MarkEdit use standard Markdown?
Yes. It follows the GFM specification strictly and adds no proprietary syntax.
Alternatives to MarkEdit
Apps that could replace this one — the same job, a different trade-off.
MacDown
Open-source Markdown editor for macOS, unmaintained since 2020.
Both are free, open-source Markdown editors for macOS. MacDown ships a live preview pane; MarkEdit keeps preview as an optional extension.
MarkText
Next generation markdown editor, running on platforms of MacOS Windows and Linux.
Both are open-source Markdown editors. MarkText ships as an Electron app; MarkEdit is a native build of about 4 MB.
Similar apps
Related in purpose, but not a straight swap.
Marked 2
This is the Markdown preview with an elegant and powerful set of tools for all writers.
Both work on Markdown on the Mac. Marked 2 is a previewer you point at an existing file; MarkEdit is the editor that writes it.
Links
Sources
Facts on this page are checked against the sources below. Last updated .
- MarkEdit — official websiteGrade B
- MarkEdit — source repositoryGrade D
