Power Calculators

{ } JSON Formatter & Validator

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🔒 Runs in your browser — nothing you type is uploaded.

Formatted JSON

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📘 About the JSON Formatter

Paste JSON from an API response, a config file or a log, and click Format to get neatly indented, readable JSON. If the JSON is invalid, the exact line and column of the error is shown so you can fix it quickly.

You can also sort keys alphabetically, switch between 2-space, 4-space or tab indentation, and minify to one line. Your data never leaves your browser, so it is safe for private API keys and customer data.

💡 How to use the JSON Formatter

  • Paste your JSON.
  • Click "Format & validate" — or Minify for one compact line.
  • Copy or download the formatted JSON.

❓ Frequently asked questions

What are common JSON errors?

Trailing commas after the last item, single quotes instead of double quotes, keys without quotes, and comments — none of these are allowed in JSON.

Is my JSON uploaded anywhere?

No. Formatting and validation run entirely in your browser.

What is the difference between formatting and minifying?

Formatting adds line breaks and indentation for people to read; minifying removes them to make the file as small as possible for computers.