JSON Prettify

Free online JSON prettify tool to format and beautify JSON for better readability.

  • Runs locally in your browser
  • No data uploaded
  • Instant processing
Waiting for input

How to Use JSON Prettify

  1. Paste minified or unformatted JSON into the input panel.
  2. The tool beautifies JSON with indentation in real time.
  3. Copy the formatted JSON output for debugging, API docs, or code reviews.

Example Usage

Input

{"name":"Alice","skills":["ts","go"]}

Output

{
  "name": "Alice",
  "skills": [
    "ts",
    "go"
  ]
}

Frequently Asked Questions

Is this JSON prettifier free to use?
Yes. It is a free online JSON prettify tool with no signup required.
Does it also validate JSON?
Yes. If the JSON is invalid, you get an error message instead of formatted output.
Can I use it for large JSON payloads?
Yes. Formatting happens locally in your browser, and performance depends on your device resources.