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JSON Formatter and Validator

Format, minify, and validate JSON text locally with clear parse errors.

Local processing. JSON text is parsed and formatted locally in this browser tab.

JSON is parsed locally in this browser tab.

How to use Format JSON

  1. 1Paste JSON into the input.
  2. 2Format or minify the text.
  3. 3Review validation errors if parsing fails.
  4. 4Copy the result.

Frequently asked questions

Is my JSON uploaded?

No. Formatting and validation happen locally in your browser.

Can this fix invalid JSON?

It reports parse errors, but it does not guess or rewrite invalid JSON automatically.

Can I minify JSON?

Yes. Use Minify to remove insignificant whitespace.

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