JSON Formatter

Paste your JSON below to format, validate, or minify it instantly.

About the JSON Formatter

JSON (JavaScript Object Notation) is the most common data format for APIs and configuration files. This tool helps you prettify minified JSON for readability, validate JSON for correctness, and minify formatted JSON for production use.

Frequently Asked Questions

Does this tool validate my JSON?

Yes. If your JSON is invalid the tool will show the exact error message from the parser, helping you locate and fix the problem.

Is my data sent to a server?

No. All formatting and validation happens locally in your browser. Your data never leaves your device.

Can I minify JSON too?

Yes. Use the Minify button to compress your JSON into a single line with no extra whitespace.