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JSON Parser Online
Parse, validate and format JSON strings with detailed error reporting.
json
parser
validator
formatter
Formatting Options
Actions
About JSON Parse Validator & Formatter
This free online JSON parse validator and formatter tool helps you validate, parse, and format JSON data using JavaScript's native JSON.parse() method. Perfect for API development, debugging, and ensuring JSON data integrity.
Key Features
- Real-time JSON validation using JavaScript's JSON.parse() method
- Auto-validation to check JSON syntax as you type
- Formatting options with customizable indentation or minification
- Detailed error detection with specific syntax error messages
- Visual feedback with color-coded validation status badges
- Copy to clipboard or download formatted JSON as files
- Auto-save functionality for session persistence
- Manual validation mode for on-demand checking
Use Cases
- API development for validating JSON payloads and responses
- Configuration file validation to check JSON config syntax
- Data processing to ensure JSON data integrity before use
- Debugging to identify and fix JSON syntax issues
- Code review preparation with proper JSON formatting
- Learning JSON structure and understanding syntax rules
Supported Formats
JSON (JavaScript Object Notation)
Formatted JSON with Custom Indentation
Minified JSON Output
RFC 7159 Compliant JSON
Nested Objects and Arrays
All JSON Data Types
Related Keywords
json validator
json parse
json formatter
validate json
json syntax checker
json parser online
json validation tool
json error checker
json pretty print
json debugger
Validation Note
This tool uses JavaScript's native JSON.parse() method, which follows the strict JSON specification. Some JSON-like formats (like JavaScript object literals) may not be valid JSON and will show errors.
Privacy & Security
All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.
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