🔄 Process JSON

Real-Time Validation

Validate JSON syntax instantly as you type with detailed error messages showing exact line and column numbers. Detects missing commas, unclosed brackets, invalid characters, and structural errors. Helps fix JSON issues quickly without external validators.

Format & Beautify

Transform minified or poorly formatted JSON into beautifully indented, readable code. Automatically adds proper line breaks, consistent spacing, and logical structure. Makes complex nested JSON documents easier to understand, edit, debug, and maintain.

Tree View

Visualize JSON structure as an interactive collapsible tree with expand/collapse nodes. Navigate deeply nested objects and arrays easily, understand data hierarchy at a glance, and identify structure patterns. Perfect for analyzing API responses and configuration files.

Syntax Highlighting

Color-coded JSON elements for easy comprehension. Keys appear in one color, strings in another, numbers in distinct color, and booleans/null clearly marked. Visual distinction helps identify data types quickly, reduces reading errors, and improves code scanning speed.

Minify JSON

Compress JSON by removing whitespace, line breaks, and unnecessary characters while preserving data integrity. Reduces file size for faster transmission, smaller storage requirements, and improved application performance with large JSON payloads in APIs or databases.

Client-Side Processing

All operations happen in your browser using JavaScript—no data sent to servers. Your JSON stays completely private and secure on your device. Works offline after page load. Perfect for handling sensitive API responses, configuration data, or confidential information.

{
  "string": "text value",
  "number": 42,
  "float": 3.14,
  "boolean": true,
  "null": null,
  "array": [1, 2, 3],
  "object": {
    "nested": "value"
  }
}

🔌 API Development

Format and validate JSON API responses and requests. Debug REST API payloads, test endpoint outputs, verify request bodies, and ensure data structure correctness. Essential for backend developers, API designers, and frontend engineers integrating with web services.

⚙️ Configuration Files

Edit and validate application configuration files like package.json, tsconfig.json, settings.json, or manifest files. Format messy config files for better readability, validate syntax before deployment, and understand complex configuration hierarchies in web applications and build tools.

📊 Data Analysis

Inspect and analyze JSON data exports from databases, analytics platforms, or data processing pipelines. Visualize nested data structures, extract specific fields, validate data integrity, and convert between JSON and other formats for data science workflows.

🐛 Debugging

Debug JSON parsing errors in applications, identify malformed JSON from network requests, fix syntax issues in data files, or troubleshoot JSON serialization problems. Quickly locate syntax errors with precise line and column numbers for faster debugging cycles.

📝 Documentation

Create formatted JSON examples for technical documentation, API references, tutorials, or code samples. Format JSON for readability in documentation, ensure syntax correctness, and provide clear examples that developers can copy and use in their projects.

🎓 Learning & Teaching

Learn JSON syntax and structure through hands-on practice. Students can experiment with different data types, nested structures, and formatting options. Teachers can demonstrate JSON concepts interactively. Perfect for coding bootcamps, online courses, and self-learners.

Paste your JSON data into our editor and click the Validate button. The tool instantly checks syntax, identifies errors with specific line and column numbers, and displays detailed error messages. Common errors include missing commas, unclosed brackets, unquoted keys, or trailing commas. Validation happens in real-time as you type, making debugging faster.

While similar, JSON has stricter rules than JavaScript objects. JSON requires keys in double quotes, only supports double-quoted strings (not single quotes), doesn't allow trailing commas, functions, undefined, or comments. JSON is a data format for exchange between systems, while JavaScript objects are programming language constructs. All valid JSON is valid JavaScript, but not all JavaScript objects are valid JSON.

Yes, our editor handles JSON files up to several megabytes in size. For very large files (10MB+), processing may take a moment depending on your device's performance. Browser-based tools have memory limitations, so extremely large JSON files (100MB+) may require desktop applications or command-line tools. For optimal performance, use tree view to collapse unneeded sections in large files.

Yes, completely safe. All JSON processing happens entirely in your browser using JavaScript—no data is ever sent to our servers or stored anywhere. Your JSON files, API responses, and configuration data never leave your computer. This client-side approach ensures maximum privacy and security for sensitive information. You can even use the tool offline once the page loads.

Paste your minified JSON into the input field and click the Format button. The tool automatically adds proper indentation, line breaks, and spacing to make the JSON human-readable. You can adjust indent size (2 or 4 spaces, or tabs) in settings. Beautifying makes it easier to understand structure, find specific values, and debug issues in compressed JSON from APIs or production systems.

Yes! Enable the "Sort object keys" option in settings and click Format. The tool alphabetically sorts all object keys while preserving data values and structure. Sorted keys make it easier to compare JSON files, find specific properties, maintain consistent formatting across projects, and spot differences when reviewing changes. Note that key order doesn't affect JSON validity or functionality.