JSON Formatter / Pretty Print online free — large files supported

Format and pretty-print JSON data with proper indentation.

Explanation

JSON Formatter / Pretty Print is a fast, free online tool for formatters. Paste your input, click Run, and get results instantly via our API-backed processing.

Input

Output

Input Format

Plain Text

Example

Example Input

{"name":"Alice","items":[1,2,3],"nested":{"key":"value"}}

Example Output

{
  "name": "Alice",
  "items": [
    1,
    2,
    3
  ],
  "nested": {
    "key": "value"
  }
}

Use Cases

Format minified JSON API responses to make them human-readable for debugging
Validate and beautify JSON configuration files before committing to version control
Pretty print compact JSON logs to quickly identify errors and trace issues
Convert single-line JSON data into indented format for code documentation
Clean up and standardize JSON structure when copying data between applications
Debug webhook payloads by formatting raw JSON to inspect nested objects and arrays

How to Use JSON Formatter / Pretty Print

Paste or type your input data in the left text area
Click the Run button to process via the API
Copy the result from the output area

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Frequently Asked Questions

How is my data processed?

Data is processed on the server via API; we do not store content beyond processing and only log minimal technical metadata.

What is JSON Formatter / Pretty Print?

JSON Formatter / Pretty Print is a free online tool that processes your input via a secure API and returns results instantly.

Is JSON Formatter / Pretty Print free to use?

Yes, JSON Formatter / Pretty Print is completely free with no registration required. You can also access it via our API with a generous free tier.

Is my data safe with JSON Formatter / Pretty Print?