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JSON Formatter & Validator

Format, validate, and minify JSON with syntax highlighting.

Input JSON

Formatted JSON

Enter JSON to format...

About This Tool

Features

  • Real-time JSON validation
  • Syntax highlighting for readability
  • Configurable indentation (2 or 4 spaces)
  • Alphabetical key sorting
  • One-click minification

Common JSON Errors

  • Missing quotes around property names
  • Trailing commas after last item
  • Single quotes instead of double quotes
  • Unescaped special characters