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JSON Formatter & Validator

Format, validate, and beautify JSON data with syntax highlighting. Perfect for debugging API responses and configuration files.

Format & beautify JSONValidate JSON syntaxMinify JSONSyntax highlightingError detectionCopy to clipboard

Input JSON

Formatted JSON

Output will appear here...

How to Use the JSON Formatter & Validator

  1. 1Paste or type your JSON data into the left input area
  2. 2Choose between Format mode to beautify JSON or Minify mode to compress it
  3. 3The tool will automatically validate your JSON and show any syntax errors
  4. 4View the formatted/minified result in the right output area
  5. 5Click "Copy JSON" to copy the result to your clipboard
  6. 6Use the statistics panel to see character count, line count, and validation status

Frequently Asked Questions

What is JSON formatting and why is it important?

JSON formatting (prettifying) adds proper indentation, line breaks, and spacing to make JSON data human-readable. This is essential for debugging API responses, configuration files, and data analysis. Minifying removes unnecessary whitespace to reduce file size for production use.

How does the JSON validator work?

Our JSON validator uses the native JavaScript JSON.parse() method to check if your JSON syntax is valid. It will highlight syntax errors and show the exact error message to help you fix formatting issues quickly.

Can I use this tool for large JSON files?

Yes, the JSON formatter can handle large JSON files efficiently since it runs entirely in your browser. However, very large files (>10MB) may slow down the interface. The tool shows real-time character and byte counts to help you monitor file size.

Is my JSON data secure when using this tool?

Absolutely! This JSON formatter runs completely client-side in your browser. Your JSON data never leaves your device or gets sent to any server, ensuring complete privacy and security for sensitive data.

What's the difference between formatting and minifying JSON?

Formatting (prettifying) adds indentation, line breaks, and proper spacing to make JSON readable for developers. Minifying removes all unnecessary whitespace and line breaks to create the smallest possible file size, ideal for production APIs and data transmission.

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