Live Reload
See your markdown changes the instant you save. No refresh button, no delay—just instant visual feedback.
How it works
Ohai uses macOS's native file system events (FSEvents) to detect changes the moment they hit disk. Unlike polling-based solutions that check every few seconds, Ohai responds instantly.
We also support atomic saves—the write-to-temp-then-rename pattern used by Vim, Emacs, and many other editors. Most markdown viewers break with atomic saves. Ohai handles them seamlessly.
Technical features
Native FSEvents
Uses macOS kernel-level file system events for zero-latency change detection.
Atomic Save Support
Works with Vim, Emacs, and any editor using write-to-temp-then-rename patterns.
Hybrid Monitoring
Combines file watching with directory monitoring for bulletproof detection.
Zero Configuration
Just open a file. No settings to tweak, no polling intervals to adjust.
Use Cases
AI Pair Programming
Watch Claude Code or Copilot write in real-time. See task lists check off as work completes.
Code Documentation
Edit your README while seeing the rendered result update live in Ohai.
Technical Writing
Write documentation in your favorite editor with instant visual preview.
Iterative Development
Rapidly iterate on markdown content with immediate feedback.
Ready to see your changes instantly?
Download for Mac