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Home›Dev Tools›JSON Formatter / Validator

JSON Formatter / Validator

Paste any JSON payload to format it, minify it, or validate that it is syntactically correct.

CalculatorHow It WorksFAQRelated Tools

What You Can Calculate

  • Result
  • Character count
  • Status

Frequently Asked Questions

Trailing commas, unquoted keys, comments, and broken string escaping are common reasons.

How this calculator works

Formula explanation

The tool parses JSON and then either pretty-prints it, minifies it, or confirms validity.

Worked example

Example: {"a":1,"b":2} -> formatted JSON

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