JSONaire

What is JSONaire?

JSONaire is a native macOS app for opening and browsing huge JSON files, the kind that make Chrome DevTools, VS Code, or Electron viewers hang or crash. It memory-maps files instead of loading them into RAM, so a 4GB document opens in milliseconds and stays smooth at any depth. Includes native window tabs, fast search, copy in any format, and a table view for object arrays. Free up to 100MB, Pro unlocks unlimited size and all themes.