JsonifyTools

    JSON Viewer

    Format, validate, and visualize your JSON data with syntax highlighting

    Input
    1
    Output

    Formatted JSON will appear here

    Paste JSON to auto-format•Syntax errors are highlighted in red

    What is a JSON Viewer?

    A JSON Viewer is an online developer tool used to format, validate, and visualize JSON data in a structured and readable way. It helps developers quickly inspect JSON files, debug API responses, and understand deeply nested objects using syntax highlighting and indentation.

    Why Use an Online JSON Viewer?

    • Format minified or unreadable JSON instantly
    • Validate JSON and detect syntax errors
    • Visualize nested objects and arrays clearly
    • Debug REST and GraphQL API responses faster
    • Works directly in the browser — no installation required

    JSON Viewer Example

    Raw JSON Input

    {"user":{"id":101,"name":"Alex","roles":["admin","editor"]}}

    Formatted JSON Output

    {
  "user": {
    "id": 101,
    "name": "Alex",
    "roles": [
      "admin",
      "editor"
    ]
  }
}

    How to Use a JSON Viewer Online

    1. Paste your JSON data into the input editor
    2. The tool automatically validates the JSON structure
    3. Formatted output appears with proper indentation
    4. Use search to find keys and values quickly
    5. Copy or download the formatted JSON

    Common Developer Use Cases

    • Inspecting REST API and GraphQL responses
    • Validating JSON configuration files
    • Debugging frontend and backend data issues
    • Formatting JSON before committing code
    • Learning and understanding complex JSON structures

    Features of This JSON Viewer Tool

    • Automatic JSON formatting and pretty print
    • Real-time JSON validation and error detection
    • Syntax highlighting for better readability
    • Supports large and deeply nested JSON files
    • 100% secure client-side processing

    Frequently Asked Questions (FAQ)

    Is this JSON Viewer free to use?

    Yes, this online JSON Viewer is completely free and works directly in your browser without any signup.

    Does the JSON Viewer store my data?

    No. All JSON processing happens locally in your browser. Your data is never uploaded to any server.

    Can I use this tool for large JSON files?

    Yes, the viewer is optimized to handle large and deeply nested JSON structures efficiently.

    Is this tool useful for API debugging?

    Absolutely. Developers commonly use JSON Viewers to inspect REST API responses and debug backend data.

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