JSONaire

About

JSONaire is a macOS application designed to open and explore very large JSON files, which typically cause slowdowns or crashes in tools like Chrome DevTools, VS Code, or Electron based viewers. By memory mapping files rather than loading them entirely into RAM, it opens a 4GB document almost instantly and maintains smooth navigation at any level. The app features native window tabs, rapid search, flexible copy options in various formats, and a table view for object arrays. The free version supports files up to 100MB, while the Pro version removes size restrictions and provides access to all themes.