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JSON Formatter

Free online tool to format and validate JSON data.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write, and easy for machines to parse and generate. It is widely used for data transmission between web applications and servers.

Key Features

  • • Format and beautify JSON with customizable indentation
  • • Minify JSON by removing all unnecessary whitespace
  • • Real-time JSON validation with detailed error messages
  • • Sort JSON keys alphabetically for consistency
  • • Support for large JSON files and nested structures
  • • Copy formatted results with one click

How to use JSON Formatter

JSON Formatter is a tool to format, minify, and validate hard-to-read JSON data. It's useful for analyzing API responses during development or organizing JSON configuration files.

  1. Paste or type your JSON data in the input area
  2. Choose between Format, Minify, or Validate options
  3. Adjust settings like indentation size or key sorting
  4. View the results and copy to clipboard if needed

Common Use Cases

  • • Debug API responses by formatting and validating JSON data
  • • Minify JSON files to reduce file size for production
  • • Validate JSON configuration files before deployment
  • • Organize and sort JSON data for better readability
  • • Convert between formatted and minified JSON formats

Pro Tips

  • • Use the Sort Keys option to maintain consistent JSON structure
  • • Validate JSON before using it in your application to avoid runtime errors
  • • Choose appropriate indentation (2 or 4 spaces) based on your team's standards
  • • Use minified JSON for production to reduce bandwidth usage

Frequently Asked Questions

What is JSON and why is it important?

JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format. It's language-independent and easy for humans to read and write, making it ideal for web APIs and configuration files.

What's the difference between formatted and minified JSON?

Formatted JSON includes indentation and line breaks for readability, while minified JSON removes all unnecessary whitespace to reduce file size. Use formatted for development and minified for production.

How can I fix JSON validation errors?

Common JSON errors include missing quotes around keys, trailing commas, unescaped quotes, and mismatched brackets. Our validator highlights the exact line and position of errors to help you fix them quickly.

Is it safe to paste sensitive data into this tool?

Yes, all JSON processing is done locally in your browser. No data is sent to external servers, ensuring your sensitive information remains private and secure.

Can I use this tool for large JSON files?

Yes, our JSON formatter can handle large files efficiently. However, very large files (several MBs) might take longer to process depending on your browser's performance.