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Developer tools / Free online tool

JSON Formatter

Format and beautify JSON with clean indentation. Make complex data easy to read.

Runs in your browser
0 characters
OUTPUT
Your result will appear here

A little input. A useful output.

Your input stays on your device. No uploads. No account. Just your result.

How to use JSON Formatter

  1. 01

    Paste a JSON object, array, or scalar.

  2. 02

    Choose two or four spaces of indentation.

  3. 03

    Format, then copy or download the JSON.

A quick example

Try a simple example

INPUT
{"name":"Ada","skills":["TypeScript","Vue"]}
OUTPUT
{
  "name": "Ada",
  "skills": [
    "TypeScript",
    "Vue"
  ]
}

About JSON Formatter

JSON is a structured data format used in APIs and configuration. Formatting adds whitespace without changing the parsed values.

When it comes in handy

  • Inspect API responses.
  • Review configuration changes.

Why use it here?

  • Runs locally in your browser.
  • No account needed; copy or download your result.

A few things to keep in mind

  • Comments and trailing commas are invalid JSON.
  • JavaScript number precision applies; avoid numeric identifiers above 2^53.

Good questions. Simple answers.

Does formatting change my values?

Formatting preserves parsed values, but JavaScript can round integers outside its safe range. Use quoted strings for large IDs.

Is my input uploaded?

No. This tool processes your input in your browser. Your input and output are not included in analytics.

A good next step

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