MarkChart

MarkChart – Mermaid Editor is a tool.

Designed specifically for previewing and editing Mermaid charts on macOS, iPadOS, and iOS, suitable for developers, product managers, technical writers, and users who need to generate visual charts from text. It offers instant rendering, built-in templates, code editing, syntax highlighting, and quick file preview capabilities based on the Markdown-style Mermaid syntax. It can start from a blank document and create flowcharts, timing diagrams, state diagrams, mind maps, architecture diagrams, Wardley diagrams, block diagrams, Venn diagrams, Ishikawa diagrams, Treemap diagrams, and more. The software supports viewing .mmd and .mermaid files directly from the File App, and can also export charts as PDF, PNG, SVG, making it easy to embed documents, presentations, or development materials. The new version adds a visual editor that allows users to select nodes and lines to adjust shape, fill color, border color, text color, and font size, and provides offline grammar documents, canvas background and grid settings, light and dark themes, multilingual interface, and privacy design without data collection.