JSON Formatter & Validator

Format, minify and validate JSON. If the JSON is invalid, the error message shows what to fix.

How to use JSON Formatter & Validator

  1. Paste your JSON into the box.
  2. Click Format to indent it, or Minify to remove spaces.
  3. If an error appears, fix the problem it describes, then copy the result.

Features

  • Format, minify and validate in one place
  • Clear error messages
  • Runs in your browser, nothing is uploaded

Supported formats and limitations

Accepts standard JSON only. Comments and trailing commas are not valid JSON and will show an error.

Frequently asked questions

Does it check if JSON is valid?

Yes. Invalid JSON shows an error message.

Is my data uploaded?

No. Everything runs in your browser.

Privacy: this tool runs in your browser. Nothing you add is uploaded to our servers.

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