JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting and error detection.
About JSON Formatting
This tool formats JSON with proper indentation, validates syntax, and provides detailed statistics. Use it to beautify API responses, debug JSON data, or prepare data for documentation. All processing happens in your browser for privacy and speed.
About this JSON Formatter & Validator
Format, validate, and beautify JSON data with our comprehensive JSON tool. Whether you're working with API responses, configuration files, or data structures, our formatter ensures your JSON is properly indented, validated, and easy to read. The tool automatically detects and highlights syntax errors, making it perfect for developers, data analysts, and anyone working with JSON data.
Key Features
Format JSON with customizable indentation (2 or 4 spaces)
Validate JSON syntax and detect errors instantly
Syntax highlighting for better readability
Minify JSON to reduce file size
Copy formatted JSON to clipboard with one click
Error detection with line number indicators
Support for large JSON files
Works entirely in your browser for privacy
How to Use
Paste your JSON data into the input field or type it directly
Click 'Format' to automatically format and validate your JSON
Review the formatted output with syntax highlighting
Check for any validation errors displayed below the output
Use 'Minify' to compress JSON by removing whitespace
Copy the formatted JSON to your clipboard using the copy button
Fix any errors shown and reformat until validation passes
Popular Use Cases
Format API responses for better readability during development
Validate JSON configuration files before deployment
Beautify minified JSON from web services
Check JSON syntax before sending to APIs
Format JSON data for documentation and presentations
Validate user-submitted JSON data in web applications
Debug JSON parsing errors in applications
Prepare JSON data for code reviews and collaboration
Tips & Best Practices
Always validate JSON before using it in production code
Use consistent indentation (2 or 4 spaces) across your project
Minify JSON for production to reduce file size and improve performance
Check for trailing commas which are invalid in JSON
Ensure all strings are properly quoted with double quotes
Validate JSON structure matches your expected schema
Use this tool to format JSON before committing to version control
Frequently Asked Questions
What's the difference between formatting and validating?
Formatting improves readability by adding proper indentation and spacing. Validation checks if the JSON syntax is correct and identifies errors.
Can I format invalid JSON?
The tool will attempt to format JSON, but will display validation errors if the JSON syntax is incorrect. You must fix errors before the JSON can be properly formatted.
Does formatting change the JSON data?
Formatting only changes whitespace and indentation. The actual data values remain unchanged. Minifying removes all unnecessary whitespace.
What JSON standards does this tool support?
The tool supports standard JSON (RFC 7159) format, including objects, arrays, strings, numbers, booleans, and null values.
Learn More About JSON Formatting
Discover why proper JSON formatting matters and how to validate your data
Mastering JSON Formatting and Validation: A Developer's Essential Guide
Learn why proper JSON formatting matters, how to validate JSON data, and discover best practices for working with JSON in modern applications.
