JSON Formatter & Validator

Paste your JSON below and click Format to beautify, or Validate to check for errors.

How to Use the JSON Formatter

Simply paste your JSON string into the input box above and click the Format button to beautify it with proper indentation. Click Validate to check if your JSON is syntactically correct. Use Minify to compress your JSON by removing unnecessary whitespace. The tool processes everything in your browser — no data is ever sent to any server.

Frequently Asked Questions

Is my data sent to a server?

No. All processing happens locally in your browser. Your JSON data never leaves your device.

What makes this different from other JSON formatters?

It is completely free, requires no registration, and works offline with no tracking or ads interrupting your workflow.