JSON Formatter & Validator Online
Format, validate, and beautify JSON data online. Supports minification, syntax highlighting, and error detection.
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Frequently Asked Questions
What is JSON formatting?
JSON formatting (also called beautifying) adds proper indentation and line breaks to make JSON data human-readable. It doesn't change the data itself.
Can I format invalid JSON?
No — our formatter validates your JSON first. If it's invalid, it will show you exactly where the error is so you can fix it.
Is my data sent to a server?
No. All formatting happens directly in your browser. Your data never leaves your device.
What's the difference between format and minify?
Formatting adds spaces and newlines for readability. Minifying removes all unnecessary whitespace to reduce file size — useful for production.