Markio

A minimal, fully offline Markdown viewer for macOS — nothing more, done well.

• GitHub Flavored Markdown — tables, task lists, strikethrough, fenced code
• Mermaid diagrams rendered inline
• Syntax highlighting that follows light/dark system appearance
• Live reload when the file changes on disk
• Adjustable reading width; one window per document
• Fully offline — every rendering asset is bundled