How do I format JSON online?

Paste your JSON into the formatter tool and click Format. It will beautify the JSON with proper indentation and validate the syntax.

What is the difference between JSON formatting and validation?

Formatting adds indentation and line breaks for readability. Validation checks that the JSON syntax is correct and will parse without errors.

Why is my JSON invalid?

Common JSON errors include trailing commas, unquoted keys, using single quotes instead of double quotes, and missing closing brackets or braces.

How do I minify JSON?

Use the Minify option in the JSON formatter to remove all whitespace and line breaks, reducing file size for production use.

Can I format nested JSON objects?

Yes, the JSON formatter handles any depth of nesting and arrays of objects, displaying each level with consistent indentation.

JSON Formatter – Dev Tools Online — Free Developer Utilities

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Quick Answer

JSON (JavaScript Object Notation) is a lightweight text format for storing and exchanging data, but raw or minified JSON is hard to read. This formatter instantly beautifies and validates any JSON so you can inspect its structure at a glance.

Format, minify, and validate JSON instantly.

Input JSON

Output

Cite This Tool

JSON Formatter. (2026). DevTools Online. Retrieved from https://devutilitypro.com/json-formatter/

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