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JSON Formatter

Format and beautify JSON with indentation. Invalid JSON will show a clear error.

Formatted JSON will appear here.

What is JSON Formatter?

This JSON Formatter helps developers format and validate JSON instantly. It cleans up messy JSON data, makes it easier to read and debug, and surfaces syntax errors before you ship.

FAQ

Is this tool free to use?

Yes. This tool is available to use for free.

Does the tool run in the browser?

Yes. The logic runs client-side in your browser.

Is my data uploaded to a server?

No. Your input stays in your browser and is not uploaded by this tool.

Can I use this tool for large files?

It depends on your device and browser. Very large inputs may be slow; for huge files, use a local CLI tool.

Example usage

Input

{"name":"John","age":30}

Output

{
  "name": "John",
  "age": 30
}

How to use

  1. Paste your JSON into the input field
  2. Click the format button
  3. View the formatted output (or any validation error)
  4. Copy the result

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