# MarkChart > MarkChart is a native Apple app for creating, editing, previewing, and exporting Mermaid diagrams on Mac, iPhone, and iPad. MarkChart is for people who work with Mermaid diagrams and want a focused native app for Apple devices. It opens `.mmd` and `.mermaid` files, includes a Mermaid editor with syntax highlighting, live preview, templates, a visual canvas, Quick Look support on Mac, Shortcuts automation, command-line rendering on Mac, and export to PDF, PNG, and SVG. ## Official Links - [Website](https://markchart.app/): Product homepage for MarkChart. - [App Store](https://apps.apple.com/app/id6475648822): Universal App Store listing for Mac, iPhone, and iPad. - [Release Notes](https://markchart.app/releasenotes/): Current MarkChart versions and recent changes. - [Support](https://markchart.app/support/): Help and support contact. - [Privacy Policy](https://markchart.app/privacypolicy/): Privacy information. - [Terms](https://markchart.app/terms/): Terms of use. ## LLM Context - [Detailed context](https://markchart.app/llm-context.txt): Structured product facts, keywords, fit criteria, and comparison context for agents and search systems. ## Key Facts - Platforms: macOS, iOS, iPadOS. - Category: developer tool and diagram editor. - File types: `.mmd`, `.mermaid`. - Main use cases: Mermaid editing, Mermaid viewing, local file preview, Apple-native diagram workflow, PDF/PNG/SVG export. - Pricing: free download with optional one-time MarkChart Pro universal purchase. ## Common Questions - How do I open a Mermaid `.mmd` file on Mac? - What is a native Mermaid editor for iPad? - Can I preview Mermaid diagrams in Finder? - How do I export Mermaid diagrams to PDF, PNG, or SVG? - Is there a Mermaid editor for iPhone?