SocialRails

Free JSON Formatter & Validator

Format, validate, and beautify JSON instantly. Fix syntax errors, minify for production, or make it readable.

Valid JSON

Try these examples:

Input JSON

0 characters

Formatted Output

JSON Formatter Features

Our JSON formatter helps developers work with JSON data more efficiently by providing formatting, validation, and optimization tools.

What It Does:

  • Validates JSON syntax
  • Pretty prints with proper indentation
  • Minifies for production use
  • Shows detailed error messages
  • Calculates size differences

Perfect For:

  • Developers: Debug API responses and config files
  • QA Testing: Validate JSON data structures
  • Data Analysis: Format JSON for readability
  • API Development: Test request/response formats
  • Configuration: Clean up config files

Common Use Cases:

  • Format API responses for debugging
  • Validate JSON before deployment
  • Minify JSON to reduce file size
  • Fix syntax errors in JSON files
  • Convert between different indent styles
  • Clean up copied JSON data

JSON Formatting Tips

Best Practices

  • • Use 2-space indentation for web development
  • • Use 4-space indentation for backend configs
  • • Minify JSON for production APIs
  • • Keep formatted JSON for development
  • • Always validate before deployment
  • • Use consistent property naming

Common Errors

  • • Trailing commas in arrays/objects
  • • Single quotes instead of double quotes
  • • Missing quotes around property names
  • • Undefined values (use null instead)
  • • Comments (not allowed in JSON)
  • • Missing closing brackets or braces

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