Lenz

Native desktop Markdown preview (Tauri + TypeScript).

Features

• Live reload
• KaTeX math via $$ ... $$
• Full CommonMark support thanks to markdown-it
• Vim Motions like j, k, gg, G
• Zoom: Ctrl/Cmd + and Ctrl/Cmd -
• Press o for the file picker

Install

• Global CLI via npm:

npm install -g lenz-md
lenz notes.md

• One-off run without a global install:

npx lenz-md notes.md

• The npm package downloads the matching native build for your OS from GitHub Releases during installation.
• Manual download is still available from releases/latest.
• Or build from source (see Development).

Usage

lenz notes.md

If you installed the package locally instead of globally, run it with npx lenz notes.md.

Development

Requirements

• Bun
• Rust
• Tauri system dependencies for your platform (see Tauri docs)

Run in development

bun install
bun run dev:app

Open an arbitrary file in dev:

bun tauri dev -- -- path/to/file.md

Fixtures:

bun run dev:app:short
bun run dev:app:long
bun run dev:app:math
bun run dev:app:readme

Build locally

bun run build
cargo check --manifest-path src-tauri/Cargo.toml
bun run tauri build