Live Transclusion
Embed files with ![[file.md]] syntax. Nested markdown recurses up to 3 levels deep with circular reference protection.
Ohai Markdown Reader
An AI-first markdown viewer for macOS that renders your markdown files in real-time. Perfect for AI coding assistants, documentation workflows, and anyone who works with markdown files.
Instant Reload
See changes the moment you (or your coding agent!) save. Hybrid file monitoring works with any editor—even Vim's atomic saves.
AI Pair Programming
Open a progress file in Ohai while Claude works. Watch task lists check off, tables populate, and code blocks appear—all in real-time.
Large Document Performance
Smooth scrolling in 500KB+ files. Automatic virtualization renders only what's visible—no lag, no stutter.
Code-Aware Embedding
Transcluded source files get automatic syntax highlighting for 25+ languages. Your API docs stay in sync with your actual code.
PDF Export
Export to PDF with syntax highlighting and formatted tables. Share with anyone.
Workflows
Living API Documentation
Transclude your source files into a README. When the code changes, the docs update automatically. Documentation that can never go stale.
Monorepo Dashboard
One master document that pulls status from multiple packages. Update any changelog, the dashboard updates. Perfect for tech leads.
AI Pair Programming
Open a progress file in Ohai while Claude works. Watch task lists check off, tables populate, and code blocks appear—all in real-time.
Data Visualization
Embed charts from Python or R scripts. When your script regenerates the image, Ohai shows the new version instantly.
Ready to see your markdown live?
The most powerful markdown viewer for macOS.
Download for Mac$3.99 (limited time introductory price)
Requires macOS 14.0 (Sonoma) or laterFrequently Asked Questions
- What makes Ohai different from VS Code's markdown preview?
- Ohai offers live transclusion (embed files with ![[file.md]]), supports Vim's atomic saves, handles 500KB+ documents with virtualized scrolling, and is a native macOS app with superior performance. It's purpose-built for reading markdown, not editing.
- Can I use Ohai with Claude Code or other AI coding assistants?
- Yes! This is a primary use case. Open a markdown file that your AI assistant is writing to, and watch it update in real-time. Task lists check off as work completes, tables populate, and code blocks appear live.
- Does Ohai work offline?
- Yes, completely. The only network access is for fetching remote images embedded in your markdown files (URLs starting with http). Your local files are never uploaded anywhere.
- What is transclusion?
- Transclusion lets you embed one file inside another using ![[filename.md]] syntax. When the embedded file changes, your document updates automatically. Perfect for keeping API documentation in sync with source code.