JSON Formatter & Validator
Format, beautify, validate, and minify JSON data instantly. All processing happens in your browser.
How to Use
1
Paste your JSON data into the input box on the left.
2
Choose an indentation level (2 or 4 spaces, or tab).
3
Click 'Format' to beautify, 'Minify' to compress, or 'Validate' to check validity.
4
Copy the result with the 'Copy' button.
Frequently Asked Questions
Is my JSON data sent to any server?
No. All processing happens entirely in your browser. Your data never leaves your device.
What JSON features are supported?
This tool supports all standard JSON as per the RFC 8259 specification, including nested objects, arrays, strings, numbers, booleans, and null values.
Can I use this to validate JSON?
Yes! Click the 'Validate' button to check if your JSON is valid. If there are errors, the tool will show exactly what went wrong and where.