JSON Validator
Validate JSON syntax and structure
JSON Input
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Validation Results
Start Validating JSON
Enter JSON data to see validation results
Frequently Asked Questions
What does JSON validation check?
JSON validation checks syntax correctness, data structure integrity, and provides detailed statistics about your JSON including type counts, nesting depth, and file size.
What kinds of errors will I see?
Common errors include missing commas, unclosed brackets or braces, invalid escape sequences, trailing commas, and malformed string values.
What are the warnings about?
Warnings highlight potential issues like very deep nesting, extremely large strings, or unusual data patterns that might indicate problems even if the JSON is syntactically valid.
Can I get a validation report?
Yes! Click the 'Report' button to download a detailed JSON validation report with all errors, warnings, and statistics for your records.