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.
💡 Advantages of using 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
🧑💻 JSON Formatter
Validate, format and minify JSON instantly
Validate, format and minify JSON. Paste your JSON and click Format.
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⚡ Cómo usar en 3 pasos
- 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.
Frequently Asked 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 WebTools 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.