‍ JSON Formatter

Validate, format and minify JSON instantly

Sort keys

Input117 B

Output133 B

{
  "nombre": "WebHerramientas",
  "gratis": true,
  "herramientas": 93,
  "categorias": [
    "pdf",
    "texto",
    "imagen"
  ]
}

Valid JSON

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Free Online ‍ JSON Formatter

Format JSON with readable indentation to review or debug it easily, or minify it into a single line to reduce its size before sending it. If the JSON has a syntax error, the tool shows you the exact error message so you can fix it.

Why use ‍ JSON Formatter

Formats JSON with 2-space indentation, easy to read
Minifies the JSON into a single line
Shows the exact error message if the JSON is invalid
Everything happens in your browser — your data is never sent to a server
Free, with no limit on everyday use

How to use it in 3 steps

1
Paste your JSON
Enter the JSON you want to format or validate.
2
Choose format or minify
Select the action you need.
3
Copy the result
Copy the processed JSON, or fix the error shown.

Questions about ‍ JSON Formatter

What happens if my JSON has an error?

The tool shows the specific error message, for example an extra comma or a missing quote, so you can locate and fix the problem.

What's the difference between formatting and minifying?

Formatting adds indentation and line breaks so the JSON is easy to read; minifying removes all unnecessary whitespace so the file is smaller.

Is my data sent to a server?

No, the JSON is processed entirely in your browser.

Can I use it to validate whether a JSON is correct before using it in my code?

Yes, if the JSON can't be formatted it's because it has a syntax error; if it formats without errors, it's valid JSON.

Is ‍ JSON Formatter free?

Yes, ‍ JSON Formatter from WebHerramientas is 100% free. No registration or subscription required. You can use it as many times as you need at no cost.

Is it safe to use ‍ JSON Formatter online?

Yes, all information is processed directly in your browser. We do not store or send your data to any external server.

Does ‍ JSON Formatter work on mobile?

Yes, the tool is fully responsive and works on any device: phone, tablet or computer with a modern browser.