JSON Formatter & Validator
Paste any JSON and get it pretty-printed, minified, or validated in a click. Great for API responses, config files, and debugging — and it runs entirely in your browser.
{} JSON Formatter & Validator
Pretty-print, minify, and validate JSON instantly.
Result appears here.
How to use the JSON Formatter & Validator
- Paste your JSON into the box above.
- Click Format for readable, indented output, or Minify to shrink it for transport.
- If the JSON is invalid, the tool tells you exactly what went wrong.
Frequently asked questions
Is the JSON formatter safe to use with secrets?
Formatting happens locally in your browser — your JSON is never sent to a server. Still, avoid pasting production secrets into any web tool as a habit.
What does 'Invalid JSON' mean?
It means the syntax is malformed — a missing comma, unquoted key, or trailing comma. The error message points to the problem so you can fix it.
Can I minify JSON for production?
Yes. Minify strips whitespace to reduce payload size, which is useful for APIs and config files.