JSON formatter and validator
Validate, format, and minify JSON with clear error messages.
How it works
Paste a JSON document and choose Format or Minify. The tool uses your browser’s JSON parser to read the content and displays a message if it finds a syntax error.
Frequently asked questions
Can I validate JSON without modifying it?
Yes. Validate checks the syntax and tells you whether the JSON is valid.
Is the JSON content uploaded to the internet?
No. The processing of this tool is done in your browser.