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JSON Formatter & Validator
Format, validate, and manipulate JSON data with Smart Decode for nested JSON and timestamps
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Indent Size:
Preserve Original Values
Insert Sample
Insert Complex Sample
Input JSON
Paste your JSON data here to format and validate
Format
Smart Decode
Formatted Output
Formatted and validated JSON result
Copy Formatted JSON
Copy Minified JSON
Smart Decode Features
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JSON String Detection:
Automatically detects and decodes JSON strings within fields
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Timestamp Conversion:
Converts numeric fields with time-related names to ISO format in local timezone
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Smart Detection:
Handles both seconds and milliseconds timestamps automatically
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Nested Processing:
Recursively processes all nested objects and arrays
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Original Preservation (Optional):
Option to keep original values alongside decoded versions