JSON Formatter
Paste JSON to pretty-print, minify, or validate syntax with clear errors.
Format and validate JSON data.
How to use
- Paste raw JSON into the input area.
- Click format to pretty-print with indentation.
- Use minify to compress JSON to one line if needed.
- Fix syntax errors shown in validation messages.
About JSON Formatter
Format and validate JSON data.
Runs in your browser — your files and input stay on your device.
Frequently asked questions
Is my JSON sent to a server?
No. Formatting and validation run in your browser.
Does it validate syntax?
Yes. Invalid JSON shows an error with the problem location.
Can I minify JSON?
Yes. Remove whitespace for production payloads.