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JSON Formatter & Validator

Format, validate, and manipulate JSON data with Smart Decode for nested JSON and timestamps

Input JSON
Paste your JSON data here to format and validate
Formatted Output
Formatted and validated JSON result
Smart Decode Features
  • JSON String Detection: Automatically detects and decodes JSON strings within fields
  • Timestamp Conversion: Converts numeric fields with time-related names to ISO format in local timezone
  • Smart Detection: Handles both seconds and milliseconds timestamps automatically
  • Nested Processing: Recursively processes all nested objects and arrays
  • Original Preservation (Optional): Option to keep original values alongside decoded versions