JSON Formatter & Validator
Format, validate, and beautify your JSON data with our free online tool
Benefits & Features
Our JSON formatter provides essential benefits for code development:
Code Formatting
- Automatic indentation
- Syntax validation
- Error detection
- Structure visualization
- Nested level formatting
Development Tools
- Real-time validation
- Copy formatted code
- Minification option
- Tree view support
- Large file handling
Productivity Features
- Quick formatting
- Error highlighting
- Format preservation
- Custom indentation
- Keyboard shortcuts
Frequently Asked Questions
What is JSON and why do we need to format it?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write and easy for machines to parse and generate. Formatting JSON helps in:
- Improving code readability
- Debugging and error detection
- Making data structure more visible
- Easier maintenance and editing
How does JSON validation work?
JSON validation checks for:
- Proper syntax and structure
- Matching brackets and braces
- Valid data types and values
- Correct use of commas and colons
- UTF-8 encoding compliance
What's the difference between formatted and minified JSON?
Understanding the key differences:
- Formatted JSON: Includes whitespace and indentation for readability
- Minified JSON: Removes all unnecessary characters to reduce size
- Both are valid JSON formats
- Minified version is better for production/transmission
- Formatted version is better for development/debugging
Can I use this tool for large JSON files?
Yes, our JSON formatter is optimized for:
- Handling large JSON files efficiently
- Processing complex nested structures
- Browser-based processing (no server uploads)
- Quick formatting and validation
- Memory-efficient operations
What are common JSON formatting errors?
Common JSON syntax errors include:
- Missing or extra commas
- Unmatched brackets or braces
- Invalid property names (must be strings)
- Single quotes instead of double quotes
- Trailing commas (not allowed in JSON)