Three modes, one window
Editor (⌘1) for distraction-free writing, Split (⌘2) for side-by-side, Preview (⌘3) for review. Switch any time.
Bidirectional scroll-sync
In Split mode, scroll the editor and the preview follows — or the other way around. Stays anchored to the section you’re reading.
Modern rendering
Full GitHub Flavored Markdown — tables, task lists, footnotes, auto-links — with VS Code-quality syntax highlighting for 30+ languages.
Math & diagrams
KaTeX renders math (inline and display). Mermaid renders flowcharts, sequence diagrams, and class diagrams inline.
Outline sidebar
Jump to any heading in long documents. Updates as you type.
35 code themes
Dracula, One Dark, Nord, GitHub, Solarized, and more. Pick once in Settings and every code block updates instantly.
Auto-reload
Edit in QuickMark, VS Code, Vim, Sublime — anywhere. The preview updates the moment you save. No close-and-reopen.
Quick Look
Press Space on any .md file in Finder to preview without opening the app — just like PDFs.
Print & PDF export
One click to print or export a polished PDF — fonts, code themes, math, and diagrams all preserved.
Privacy-first
No telemetry, no network calls, no data collection. QuickMark reads files locally and that’s it.
Native
SwiftUI document-based app for macOS 14+. Apple Silicon and Intel both supported. Instantly follows your system Light/Dark mode.