MarkEdit

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# MarkEdit

[![](https://img.shields.io/badge/Platform-macOS_26.0+-blue?color=007bff)](https://github.com/MarkEdit-app/MarkEdit?tab=readme-ov-file#installation) [![](https://img.shields.io/github/downloads/MarkEdit-app/MarkEdit/total.svg?label=Downloads&color=f7821b)](https://github.com/MarkEdit-app/MarkEdit/releases) [![](https://github.com/MarkEdit-app/MarkEdit/actions/workflows/build-and-test.yml/badge.svg?branch=main)](https://github.com/MarkEdit-app/MarkEdit/actions/workflows/build-and-test.yml)

MarkEdit is a free and **open-source** Markdown editor, for macOS. It's just like _TextEdit_ on Mac but dedicated to `Markdown`.

No bloat. Markdown editing done right in a 4 MB app that flies through million-line files.

We do not claim to be the best in any single dimension. Instead, we aim to strike the right balance across **size**, **speed**, **native integration**, and **correctness**.

_For perspective: at just 4 MB, MarkEdit is much smaller than Electron apps. Handling a 10 MB file with ease puts it ahead of TextKit-based editors. Performance-first editors built with Rust lack native features, while correctness alone rules out editors that rely on regex-based Markdown parsing._

> [!TIP]
> Discover our other free and open-source apps at [libremac.github.io](https://libremac.github.io/).
>
> Follow our Mastodon account [@MarkEditApp](https://mastodon.social/@MarkEditApp) for the latest updates.

## Preview

![Screenshots 01](/Screenshots/01.png)

![Screenshots 02](/Screenshots/02.png)

![Screenshots 03](/Screenshots/03.png)

![Screenshots 04](/Screenshots/04.png)

## What makes MarkEdit different

- Privacy-focused: doesn't collect any user data
- Native: macOS aesthetics, with Shortcuts and AppleScript support
- Fast: launches in a flash, edits million-line files easily
- Lightweight: installer is about 4 MB
- Extensible: built-in extension manager for curated extensions

MarkEdit strictly follows the [GFM specification](https://github.github.com/gfm/), with no proprietary syntax or invented features. Complex editing like multi-caret and code folding is built on [CodeMirror 6](https://codemirror.net/) for correctness and performance, consistently faster than most macOS editors. UI controls remain native to macOS in both aesthetics and behavior, including force-touch word lookup, inline predictions, and Writing Tools.

Customization is built around CSS, JavaScript, and [CodeMirror extensions](https://github.com/MarkEdit-app/MarkEdit-api). Official extensions let you preview Markdown, hide syntax, customize themes, write with AI, edit tables visually, and much more.

<img src="./Screenshots/extensions.png" width="800" alt="MarkEdit Extensions">

> To learn more, refer to [Philosophy](https://github.com/MarkEdit-app/MarkEdit/wiki/Philosophy), [Why Mar