JSON Formatter

What is JSON Formatter?

Make JSON easier to read with consistent indentation.

Formatting adds indentation and line breaks while preserving JSON values within JavaScript numeric precision. Choose two or four spaces.

Why use JSON Formatter?

Use this tool to inspect a small dataset or prepare data for another application without installing software. Processing takes place in this browser. No account is required.

How to use JSON Formatter

1. Paste your input, upload a file, or load Sample Data.
2. Choose any applicable options and select Format.
3. Review the output, then copy or download it.

Example

Input

{"name":"Ada","tags":["json","csv"]}

Output

{
  "name": "Ada",
  "tags": [
    "json",
    "csv"
  ]
}

Common problems

JSON requires double-quoted property names and does not allow comments or trailing commas. Very large integers should be quoted to preserve their exact digits.

Frequently asked questions

Is my conversion data uploaded?

No. Conversion inputs and outputs remain in this browser. Contact form messages are handled separately by WordPress.

Can I process large files?

The default limit is 10 MB. Browser memory and data complexity can impose lower practical limits.

Do I need an account?

No account is needed to use this tool.