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JSON Formatter & Validator Online

Format, validate and beautify JSON data with instant results.

json
formatter
validator

Options

2 spaces

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About JSON Formatter & Minifier

This free online JSON formatter and minifier tool helps you format, beautify, and minify JSON data with customizable options. Perfect for developers, API testing, and data processing workflows.

Key Features

  • JSON formatting with customizable indentation (0-8 spaces)
  • JSON minification to remove whitespace and reduce file size
  • Real-time syntax validation with detailed error messages
  • Alphabetical key sorting for consistent formatting
  • File upload and download capabilities
  • Auto-validation as you type for instant feedback
  • One-click copy to clipboard or download as .json file

Use Cases

  • API development and response formatting
  • Configuration file cleanup and organization
  • Data analysis and debugging structured data
  • Code review preparation for better readability
  • File optimization to reduce bandwidth usage
  • Data migration validation and cleaning

Supported Formats

JSON (JavaScript Object Notation)
Formatted JSON with custom indentation
Minified JSON for production use
Sorted JSON with alphabetical keys

Related Keywords

json formatter
json beautifier
json minifier
json validator
json pretty print
json parser
json syntax checker
json online tool
format json
minify json

JSON Formatting Best Practices

Use consistent indentation (2 or 4 spaces), sort keys alphabetically for easier comparison, always validate syntax before production use, and minify JSON for production to reduce file size. Remember that JSON doesn't support comments.

Privacy & Security

All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.

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