Sheaf

About Sheaf

Sheaf is a fast, offline markdown editor with a live split-view preview with raw source on one side, beautifully rendered output on the other, updating in real time as you type. Key features: * Split / source / preview view modes with synchronized scrolling * Multiple documents at once via tabs * GFM markdown (tables, strikethrough, autolinks), math (KaTeX), and diagrams (Mermaid) * Syntax-highlighted code blocks * Autosave plus manual Save/Save As, with external-edit detection and safe reload * Document outline sidebar, word count, and reading time * Export to standalone HTML or PDF * Light/dark appearance with 7 selectable editor color themes * Native macOS integration: file associations, Open Recent, Finder drag-and-drop