Markron

A WYSIWYG Markdown editor for Windows — write like in a word processor, save as clean Markdown.

English | 한국어

Markron lets you edit Markdown documents like a word processor — no Markdown syntax knowledge required. Everything is always saved as standard Markdown text; only formatting that Markdown cannot express (fonts, colors, underline, merged cells) is stored as inline HTML, keeping your files compatible everywhere. Built with Electron, React, TypeScript, Tiptap (ProseMirror), and CodeMirror 6.

Download

Get the latest Windows installer from GitHub Releases.

⬇ Download the latest version — grab Markron-Setup-x.y.z.exe from the release page and run it.

Once installed, Markron keeps itself up to date: it checks GitHub Releases on launch and downloads updates in the background.

Features

• WYSIWYG editing — formatting is applied as you type; no Markdown symbols on screen.
• Formatting quick bar — save, undo/redo, paragraph styles (Heading 1–3), font family/size, bold·italic·underline·strikethrough, inline code, text/highlight color, lists (bulleted·numbered·checklist), blockquote, code block, tables, images, links, horizontal rule.
• Table editing — insert via a grid picker; with the cursor inside a table the quick bar shows row/column add·delete, cell merge/split, and header-row toggle buttons.
• Markdown input rules — type # , - , **bold** and more, just like plain Markdown.
• GitHub-style line breaks — Enter inserts a line break (no blank line); Enter on an empty line (double Enter) starts a new paragraph.
• SFTP remote editing — open and save Markdown files on remote servers; Ctrl+S saves straight to the server. Connections can be saved for one-click reconnects.
• Multilingual UI — Korean and English, switchable in Preferences (follows the OS language by default).
• Auto update — new releases are detected and installed automatically.
• Light/dark theme — follows the OS, or force a theme in Preferences.

Three view modes

Switch with the tabs at the bottom of the window (or keyboard shortcuts).

Editor mode (Ctrl+1)

The default mode: edit with live formatting on a paper-like page panel.

Plain mode (Ctrl+2)

Shows the raw Markdown source untouched, with line numbers and syntax highlighting. You can edit it directly.

Split mode (Ctrl+3)

Edit on the left; the read-only Markdown source on the right updates live.

SFTP remote open/save

Use File → Open from SFTP… / File → Save to SFTP… to work with files on a remote server.

• Password or private-key authentication
• Remote directory browser to navigate folders and pick files
• Documents opened over SFTP save back to the server with Ctrl+S (dropped connections reconnect automatically)
• Saved connections: pick a saved profile from the list on the left of the connection dialog and connect with one click. Passwords and key passphrases are stored only as safeStorage (Windows DPAPI) ciphertext bound to your Windows account — never in plain text.

Preferences (Ctrl+,)

File → Preferences… — changes apply instantly and are saved automatically.

• Theme: follow system / light / dark
• Language: follow system / 한국어 / English
• Default editor font & size
• Automatic update checks on/off

Keyboard shortcuts

Action	Shortcut
New / Open	Ctrl+N / Ctrl+O
Save / Save As	Ctrl+S / Ctrl+Shift+S
Editor / Plain / Split mode	Ctrl+1 / Ctrl+2 / Ctrl+3
Bold / Italic / Underline	Ctrl+B / Ctrl+I / Ctrl+U
Undo / Redo	Ctrl+Z / Ctrl+Y
Preferences	Ctrl+,

Getting started

Requirements

• Node.js 20+
• Windows 10/11 (current packaging target)

Development

npm install
npm run dev        # dev mode with HMR

Build & package

npm run build      # typecheck + production build (out/)
npm run package    # Windows installer (release/, NSIS)
npm run release    # package + publish to GitHub Releases (requires GH_TOKEN)

Pushing a v* tag also triggers GitHub Actions to build the installer and upload it to the release automatically.

Tech stack

Area	Technology
Shell	Electron + electron-vite
UI	React + TypeScript
WYSIWYG	Tiptap (ProseMirror)
Plain view	CodeMirror 6
Markdown conversion	tiptap-markdown
SFTP	ssh2-sftp-client
Auto update	electron-updater
Packaging	electron-builder

Project structure

src/
  main/        # Electron main: windows, file I/O, SFTP, settings, updater, native dialogs
  preload/     # contextBridge IPC (the only main↔renderer bridge)
  renderer/    # React UI: quick bar, editor/plain/split modes, dialogs
  shared/      # shared types & i18n dictionary (ko/en)

See CLAUDE.md for detailed development guidelines and the design system (Korean).

Troubleshooting

• Cannot read properties of undefined (reading 'handle') on launch — the ELECTRON_RUN_AS_NODE=1 environment variable was inherited (some IDE extension terminals do this). Run $env:ELECTRON_RUN_AS_NODE = $null and try again.

License

MIT