loomark

A free, elegant Markdown editor anyone can pick up. No toolbars, no clutter, and the file on disk is always what you see.

Language / 语言: English · 中文 · Website

loomark is an open-source, free, elegant Markdown editor for writing, notes, and documentation. It is built for people who just want to write: no toolbars, no status bar, nothing to configure: just your text and a file list, with a tab strip only when you open a second document.

It offers true WYSIWYG editing, 4 built-in themes with custom-theme import, rich-text copy, smart line breaks, search and replace, a document outline, PDF / HTML / Word export, and support for macOS, Windows, and Linux.

Whatever writes the file (an AI agent such as Claude Code or Codex, a script, or another editor), loomark shows the new content right away. No reopening, no manual refresh.

Download | Features

Interactive task lists, and Markdown rendered as you type: headings, links, tables and inline code.

Four built-in themes — Light, Sepia, Solarized Dark and Nord. The themes/ folder also ships more styles (Bear, Notion, iA Writer, Gruvbox, Dracula and friends) that you can import as custom themes, with a guide to writing your own.

• Always in Sync: Whenever the file changes on disk (an AI agent, a script, another editor), the editor updates immediately. No reopening, no manual refresh.
• True WYSIWYG Editing: Type Markdown and see rich text directly. No split-pane preview.
• Files & Outline: Browse Markdown files in the selected folder, or switch to a document outline for focused heading navigation.
• Source Mode: Switch to the raw Markdown source whenever you need to inspect or edit it directly.
• Task Lists: Click checkboxes to complete tasks, or use the keyboard shortcut.
• Highlights & LaTeX: Write ==highlighted text== and render mathematical formulas with KaTeX.
• Mermaid Diagrams: Mermaid code blocks render as diagrams in an isolated hidden iframe with strict parsing; click a diagram to edit its source.
• Search & Replace: Find anything in the current document with ⌘/Ctrl+F, then replace the current match or all matches.
• Smart Line Breaks: Single newlines render as line breaks, matching how people and AI tools write Markdown.
• Rich Text Copy: Copy content with formatting preserved into WeChat, email, and other rich-text editors.
• Themes: Four built-in themes (Light, Sepia, Solarized Dark, Nord), plus custom themes you import from any CSS file.
• Recent Files & Session Restore: Jump back to the last 10 documents from the File menu, and reopen where you left off at launch.
• Editor Font Settings: Pick any installed system font and size for the editor; your choice wins over theme defaults.
• Multiple Windows: Independent editor windows, each with its own save queue and close protection.
• Save Status Hint: A quiet titlebar indicator shows unsaved/saved, then fades away.
• Heading Anchors: Click intra-document anchor links to jump between headings, CJK included.
• Version Changelog: The first launch after an update opens the built-in changelog once, so you can see what changed without repeated prompts.
• PDF, HTML & Word Export: Turn your Markdown document into a themed PDF, self-contained HTML, or editable Word document.
• Image Export: Share Markdown as one continuous PNG at the desktop or mobile reading width; longer documents continue as numbered pages.
• Portable Image Paths: Local images use safe file:// URLs for display and return to relative paths when saved.
• Minimal by Design: No toolbar, no permanent sidebar, no distractions.
• Cross-Platform: Available for macOS, Windows, and Linux.

loomark does not ask you to change your habits. It works well alongside Obsidian, Typora, VS Code, and other Markdown apps, all sharing the same .md files, with each tool doing what it does best.

Check Releases for the latest builds.

loomark will keep growing as a focused, free Markdown editor. A full history of every release, in both languages, lives in resources/demo/changelog.md, which the app also opens after an update. See the Releases page for the latest builds.

MIT, Free forever.

loomark is built by Cola.app and maintained by orange2ai. This fork is developed by cmx-star. Issues, ideas and pull requests are welcome.