JSON Formatter & Validator
Format, validate, and minify JSON data with real-time error detection. Perfect for developers working with APIs, configuration files, and data structures. Instantly identify syntax errors and optimize JSON for production.
JSON Formatter & Validator
Format, validate, and minify JSON data with real-time error detection and syntax highlighting
JSON Input
Quick Samples:
💡 JSON Tips & Common Errors
Common JSON Errors:
- Missing quotes around strings
- Trailing commas after last element
- Single quotes instead of double quotes
- Undefined or function values
Best Practices:
- Always use double quotes for strings
- Validate JSON before using in applications
- Minify JSON for production to reduce size
- Use proper indentation for readability
How to Use the JSON Formatter & Validator
Our JSON formatter and validator tool helps developers quickly format, validate, and optimize JSON data. Simply paste your JSON into the input field and instantly see formatted output, validation results, and minified versions. The tool provides real-time syntax checking and highlights errors with clear explanations.
Key Features
- Real-time JSON validation with detailed error messages
- Beautiful formatting with proper indentation and syntax highlighting
- JSON minification for production use with size comparison
- Copy and download functionality for formatted and minified JSON
- Sample JSON templates for quick testing
- File size and line count statistics
Common JSON Validation Errors
- Missing quotes around property names or string values
- Trailing commas after the last element in objects or arrays
- Using single quotes instead of double quotes
- Including undefined values, functions, or comments
- Mismatched brackets or braces
- Invalid escape sequences in strings
Perfect for Developers
Essential for web developers, API developers, and anyone working with JSON data. Use it to validate API responses, format configuration files, debug JSON parsing issues, and optimize JSON for production environments. The tool supports complex nested objects, arrays, and all valid JSON data types including strings, numbers, booleans, null values, objects, and arrays.