JSON Formatter

Paste raw JSON to auto-format with proper indentation, minify for production, or validate for syntax errors. Supports large payloads.

Input JSON

Output

Indent:

How to use JSON Formatter

Format, minify and validate JSON instantly.

Paste raw or minified JSON into the input.

Click Format to pretty-print with indentation, or Minify to compact it.

Any syntax errors are highlighted so you can fix them before copying.

Is JSON Formatter free to use?

Yes, JSON Formatter is 100% free with no account required and no usage limits.

Is my data private?

Yes. Processing happens entirely in your browser. We never see, store, or transmit your input data.

Does JSON Formatter send data to a server?

No. All processing happens locally in your browser. Your data is never uploaded or transmitted anywhere.

Can I use JSON Formatter with large files?

Yes, though very large files (100 MB+) may be slower depending on your device. For most development use cases, performance is instant.