JSON Formatter & Validator

Indent size

JSON Tools

Validate, format, and minify JSON data with instant feedback.

  • ✅ Syntax Validation
  • 🎨 Pretty Formatting
  • 📦 Minification
  • 🔤 Key Sorting
  • 📊 Structure Analysis
JSON Statistics

Process JSON to see statistics

Common JSON Errors
  • ❌ Missing quotes around property names
  • ❌ Trailing commas after last element
  • ❌ Single quotes instead of double
  • ❌ Unescaped characters in strings
  • ❌ Missing closing brackets/braces
Sample Data

Professional JSON Formatter and Validator Tool

Format, validate, and optimize JSON data with our comprehensive JSON processing tool. Perfect for API development, configuration management, and data analysis. Instantly identify syntax errors and improve JSON readability.

JSON Formatting and Validation Features

  • Real-time JSON syntax validation with detailed error reporting
  • Pretty-print formatting with customizable indentation
  • JSON minification for reduced file size
  • Alphabetical key sorting for consistent formatting
  • Comprehensive statistics including size and structure analysis
  • Error highlighting with line and column information

Why Use a JSON Formatter?

Well-formatted JSON is essential for debugging, code reviews, and maintaining readable configuration files. Our tool helps developers quickly identify syntax errors, optimize JSON size, and maintain consistent formatting standards across projects.

Common JSON Use Cases

  • API response validation and debugging
  • Configuration file formatting and validation
  • Data export and import processing
  • Database query result formatting
  • Web application data exchange
  • JSON schema development and testing

JSON Best Practices

  • Always use double quotes for strings and property names
  • Avoid trailing commas in objects and arrays
  • Use consistent indentation for better readability
  • Escape special characters properly in string values
  • Validate JSON before deployment or data exchange
  • Consider minifying JSON for production environments

JSON Questions

A text format for structured data that's become the default for web APIs. Curly braces for objects, square brackets for arrays, double quotes for strings. If you've built anything web-related, you've seen it.

Paste it here and try to format it. If it breaks, you'll see exactly where and why — trailing comma, missing bracket, wrong quotes, whatever.

Minified strips all whitespace for smaller payloads — use it in production. Formatted adds indentation and newlines — use it when you're trying to read the thing.

Trailing commas (JSON hates them), single quotes (must be double), unquoted keys (not allowed), and comments (also not allowed — JSON isn't JavaScript).