# couplet

> Minimalist live-preview markdown editor for macOS (formerly md-mini)

couplet is a free, open-source markdown editor built with Tauri 2, Svelte 5, and CodeMirror 6. You edit raw markdown and see it rendered inline — no split panes, no mode switching. The CLI answers to `couplet`, the short alias `coup`, and `mdmini`. Until the renamed release ships, the Homebrew cask and the MCP setup keep the `mdmini` name; after it, all three work.

## Features

- **Live preview** — markdown renders inline as you type
- **Mermaid diagrams** — flowcharts, sequence, class, state, ER, Gantt, pie, gitgraph, mindmap render as inline SVG
- **GFM tables** — interactive editing, drag to reorder rows/columns, inline formatting
- **Syntax-highlighted code blocks** — 100+ languages with copy button
- **Collapsible headings** — fold/unfold document sections
- **Secret masking** — sensitive values in .env and shell configs (.zshrc, .bashrc) hidden by default
- **Shell config highlighting** — .zshrc, .bashrc, .profile render with Shell syntax
- **File watching** — auto-reloads on external changes
- **CLI launcher** — `couplet file.md` from terminal (or `coup file.md`)
- **Dark & Light themes** — Rosé Pine

## Install

```
brew tap malinborn/mdmini
brew trust malinborn/mdmini
brew install --cask mdmini
```

## Links

- Website: https://couplet.pro/
- Source: https://github.com/malinborn/mdmini
- Releases: https://github.com/malinborn/mdmini/releases
- License: GPL-3.0