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JSON Formatter & Validator

Invalid

JSON Input

Sample JSON Structures

Formatted JSON

Formatted JSON will appear here...

JSON Guide & Tips

Data Types

  • • String: "text"
  • • Number: 123, 12.34
  • • Boolean: true, false
  • • Null: null
  • • Array: [1, 2, 3]
  • • Object: {"key": "value"}

Common Errors

  • • Missing quotes on strings
  • • Trailing commas
  • • Single quotes (use double)
  • • Undefined values
  • • Comments (not allowed)

Best Practices

  • • Use consistent naming
  • • Keep nesting reasonable
  • • Validate with schemas
  • • Use meaningful keys
  • • Consider data size