JSON Formatter

Indent JSON so nested objects and arrays are easier to read.

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Indent spaces

JSON

Up to 200,000 characters. Processed locally.

Result

0 UTF-16 units

0Words

0Characters

0Without spaces

0Lines

How it works

Paste your content or load the example. Choose the available options, run the tool, then copy or download the result.

A practical example

JSON

{"name":"fiokit","active":true}

Result

{
  "name": "fiokit",
  "active": true
}

Frequently asked questions

Does formatting preserve my JSON exactly?

The formatter parses and serializes JSON rather than preserving the original bytes. Whitespace, key order and number formatting can change. Numbers use JavaScript precision, and duplicate object keys retain their last value. Keep the original when exact byte preservation matters.

Is my input sent to a server?

No. Your content is processed in this browser. It is never sent to the server or saved.

What should I know about JSON Formatter?

JSON numbers follow JavaScript precision; duplicate keys retain their last value.