Question 1

What is JSON beautifying?

Accepted Answer

JSON beautifying (also called pretty printing) is the process of adding proper indentation, line breaks, and spacing to compact or minified JSON data. This makes the JSON structure easier to read, understand, and debug. Beautified JSON uses consistent indentation to show the hierarchy of nested objects and arrays clearly.

Question 2

What is the difference between JSON beautifier and JSON formatter?

Accepted Answer

JSON beautifier and JSON formatter are essentially the same thing. Both take unformatted or minified JSON and add indentation and line breaks to make it readable. Some tools use "formatter" to include additional features like sorting keys or validating syntax, while "beautifier" specifically emphasizes making JSON visually appealing and easy to read.

Question 3

How to pretty print JSON in code?

Accepted Answer

In JavaScript/Node.js, use JSON.stringify(data, null, 2) where 2 is the number of indent spaces. In Python, use json.dumps(data, indent=2). In Java, use new GsonBuilder().setPrettyPrinting().create().toJson(obj). In PHP, use json_encode($data, JSON_PRETTY_PRINT). Most languages have built-in or library support for JSON pretty printing.

Rule	Description	Example
Indentation	Use consistent spaces or tabs for nesting	2 spaces, 4 spaces, or 1 tab
Trailing Commas	NOT allowed after last item in arrays/objects	{"a":1, "b":2} (no comma after 2)
Quotes	Keys and strings must use double quotes	{"key": "value"} not {'key': 'value'}
Comments	NOT supported in standard JSON	Use JSONC or JSON5 for comments
Data Types	string, number, boolean, null, object, array	{"str":"hi","num":42,"ok":true,"x":null}

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