A native macOS Markdown editor

Preview and Source.
Both editable.

Edit the rendered Preview like a normal document, or work directly in Markdown Source. Use them side by side or separately—they stay in sync in the same plain .md file.

No vault. No proprietary format. Just your file, edited the way that fits the moment.

Available now on the Mac App Store

Compare Markdown editors

New: Mermaid diagrams and LaTeX formulas

One document, two synchronized editors. Select either view and keep writing.

Made for more than one Mac language

Your Markdown editor, in your language.

Choose Zizeg’s interface language in Preferences. The built-in Help follows your Mac’s language.

Edit either view

Preview and Source are equal editing surfaces, with the same toolbar, menus, and shortcuts.

Keep the real file

Work directly with ordinary Markdown on disk. Follow Markdown links in Preview to open another local .md file or jump to a heading.

Use Mac conventions

Native document tabs, menus, toolbar, autosave, Finder files, and independent typography for each view.

Control remote content

Remote images remain blocked until you approve them, without rewriting the Markdown behind your back.

Choose your view

One document. Three ways to work.

The document never changes format when you change views. Only the way you interact with it changes.

Preview

Edit the rendered document

Write with headings, lists, tables, links, and formatting shown in place—without giving up direct editing.

Split

Keep both editors visible

Edit either Preview or Source while the other side updates. Synchronize scrolling or let each pane move independently.

Source

Control the Markdown directly

Work with the syntax itself, with row numbers, Find, and the same formatting commands available in Preview.

Built for real Markdown workflows

The essentials—and the details that keep files usable.

Zizeg covers the expected Markdown tools, then adds careful handling for the files, images, safety, and exports around the document.

Headings and styles Lists and tasks Links and quotes Code and tables Diagrams and formulas Undo, Find, autosave Light and dark themes

Diagrams and formulas in Markdown

Edit Mermaid text in Source and watch the diagram redraw in Preview. Click a LaTeX formula in Preview to edit its notation. Viewing is free. Editing and export require an unlock.

See both workflows

Write Mermaid diagrams and LaTeX math in Markdown

FORMATTING

One set of controls, in either editor

Use the toolbar, menus, or shortcuts in Preview or Source. Commands toggle formatting on and off, and Source always remains real Markdown.

How editable Preview and Split work

FILES & IMAGES

Assets that travel with the document

Paste images into a sibling assets folder or embed them for single-file portability. Drag an image’s corner handle in Preview to resize it. After a Finder rename, Zizeg can offer to repair the document’s asset paths.

Fix missing Markdown images

SAFETY

Safety without silent rewriting

Zizeg sanitizes rendered and exported output and flags unsupported content. Remote images are blocked by default. Zizeg asks for confirmation before opening local links to apps, scripts, or installers.

Troubleshoot remote Markdown images

EXPORT & NAVIGATION

Finish and move through larger documents

Navigate with a table of contents and row numbers. Export self-contained HTML or multi-page PDF with rendered diagrams and formulas, and choose which remote images to include.

Export Markdown to PDF Export standalone HTML

Especially useful for AI-generated Markdown

Markdown you can hand-edit—and hand back to your AI agent.

AI tools constantly produce READMEs, instruction files, specifications, plans, changelogs, and summaries. Review and correct them visually or in raw source while every document stays plain, portable Markdown.

Zizeg itself does not use AI or send your documents to an AI service. It simply makes the Markdown around AI-assisted work easier to maintain.

See it