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JSON Formatter

Beautify and pretty-print JSON with 2-space, 4-space or tab indentation, with optional key sorting.

Runs in your browserJSON → JSON
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Example

Input
{"name":"Ada","skills":["math","code"]}
Output
{
  "name": "Ada",
  "skills": [
    "math",
    "code"
  ]
}

How to use the JSON Formatter

  1. Paste or type your JSON into the input area, or open a file from your device.
  2. Adjust the options above the editor if the tool offers any.
  3. Review the JSON result, then copy it or download it as a file.

Privacy and limitations

  • Your data is processed on your device and is not uploaded to any server.

Frequently asked questions

Does formatting change my data?

No. Only whitespace changes. Keys, values and order are kept unless you enable key sorting.

Why does it say my JSON is invalid?

JSON requires double-quoted keys and strings and does not allow trailing commas or comments. The error shows the line and column of the first problem.

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