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JSON Validator

Free online JSON syntax validator with precise line and column error reporting.

Processed 100% locally in your browser memory.

JSON Input → Validated & Formatted JSON

JSON Input

80 characters

Validated & Formatted JSON

92 characters

{
  "name": "ShadTools",
  "status": "active",
  "features": [
    "fast",
    "local"
  ]
}

How JSON Validation Works

The JSON validator parses input text using strict JSON syntax rules and identifies exact error locations if parsing fails. All operations execute locally in memory.

Frequently Asked Questions

Is my JSON data uploaded to a server? +

No, validation occurs 100% locally inside your web browser.

Related Tools

json/formatter →