UniToolHub

JSON Formatter

Format and prettify JSON with custom indentation.

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About JSON Formatter

Format and prettify JSON data with customizable indentation. Paste minified or messy JSON and get clean, readable, properly indented output instantly.

How to Use

  1. 1

    Paste JSON

    Paste your JSON data into the input editor.

  2. 2

    Choose indentation

    Select 2 spaces, 4 spaces, or tabs.

  3. 3

    Copy formatted JSON

    Click copy to grab the formatted output.

Examples

Minified to pretty
Input: {"name":"John","age":30}
Output: { "name": "John", "age": 30 }

Frequently Asked Questions

What is JSON formatting?
JSON formatting adds proper indentation and line breaks to make JSON data readable. It doesn't change the data — just the presentation.
What indentation options are available?
Choose between 2 spaces, 4 spaces, or tabs for indentation.
Can it fix invalid JSON?
The formatter will show an error if your JSON is invalid. Use the JSON Validator to identify specific issues.