JSONLint Pro

JSON Editor & Validator

Only for Mac

₹ 699

Mac

The trusted JSON validator from jsonlint.com, now as a native Mac app. Validate, format, repair, and convert JSON with blazing fast performance. JSONLint Pro is a professional JSON editor and validator designed for macOS. Built for developers who work with JSON data every day. FROM THE MAKERS OF JSONLINT.COM The trusted online JSON validator used by millions of developers worldwide now has a powerful desktop companion. KEY FEATURES ▸ Real-time Validation Get instant feedback as you type. Clear error messages show exactly where problems occur with line and column numbers. ▸ Smart JSON Repair Automatically fix common JSON errors: • Trailing commas • Single quotes → double quotes • Unquoted object keys • Smart/curly quotes → straight quotes • JavaScript-style comments • undefined, NaN, and Infinity values ▸ Beautiful Formatting Pretty-print your JSON with customizable indentation (2 or 4 spaces). One-click minification removes all whitespace for production use. Sort keys alphabetically for consistent ordering. ▸ Format Conversions Transform your JSON into other formats: • YAML - Human-readable configuration format • CSV - Spreadsheet-compatible (for arrays of objects) • TypeScript - Generate interface definitions • Swift - Generate Codable struct definitions ▸ Interactive Tree View Visualize your JSON structure with a collapsible tree. Each node displays its JSON Path (like $.users[0].name) — click to copy. Color-coded type indicators for objects, arrays, strings, numbers, booleans, and null values. ▸ Sample Datasets 14 built-in sample JSON files for testing and learning: • User profiles and product catalogs • API responses and nested structures • GeoJSON and GraphQL examples • Configuration files and edge cases ▸ Dark Mode Beautiful adaptive interface that follows your system appearance. Syntax highlighting inspired by popular code editor themes with distinct colors for each JSON type. ▸ Multi-Document Workflow Work with multiple JSON files using tabs. Recent files list for quick access. Drag and drop files to open. Load JSON directly from URLs. BLAZING FAST PERFORMANCE Native macOS app built with SwiftUI for maximum performance: • Validate 1 MB files in under 500ms • Format 100 KB files in under 100ms • Parse complex nested structures instantly Works completely offline. Your data never leaves your Mac. PRIVACY FOCUSED JSONLint Pro runs entirely on your device: • No data collection • No analytics or tracking • No internet connection required • No account needed PERFECT FOR • API Development - Validate and format API responses • Configuration Files - Edit package.json, tsconfig, and more • Data Analysis - Explore and understand JSON datasets • Code Generation - Convert JSON to TypeScript or Swift types • Learning - Understand JSON structure with the tree view REQUIREMENTS • macOS 12.0 (Monterey) or later • Universal app for Apple Silicon and Intel Macs • ~5 MB download Questions or feedback? Visit jsonlint.com Made with love for the developer community.

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The developer, Todd Garland, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    • Provider
      • Todd Garland
    • Size
      • 3.1 MB
    • Category
      • Developer Tools
    • Compatibility
      Requires macOS 12.0 or later.
      • Mac
        Requires macOS 12.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © Todd Garland
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.