JSON Formatter & Validator
JSON Formatter & Validator
Format, validate, and minify JSON instantly. Catch errors with clear messages, then copy the clean result.
How to Use the JSON Formatter
Paste your JSON into the input box and click Format to pretty-print it with your chosen indentation, or Minify to strip it down to one compact line. If the JSON has an error, you will see a clear message explaining what went wrong.
Why Validate JSON?
A single missing comma or bracket can break an API call or a config file. Validating here before you ship saves debugging time, and formatting makes nested data far easier to read and review.
Frequently Asked Questions
What does the validator check?
It checks that your JSON follows the correct syntax and reports the exact error if it does not.
Can it minify JSON too?
Yes. Click Minify to remove all whitespace and produce the smallest valid output.
Is my data sent to a server?
No. All formatting and validation happen in your browser, so your data stays private.