JSON Formatter
Format, validate and minify JSON in one click with this free JSON formatter. Paste your JSON, fix errors with a clear position message, and copy the clean result back into your code.
Format your JSON
How to use
- Paste your JSON into the input box above.
- Press Format for readable JSON, Minify for compact JSON, or Validate to check it.
- Read any error message, fix the JSON, and press Copy result to use it.
How do I format JSON with this tool?
Paste your JSON into the input box and press Format to add two-space indentation and line breaks. The result is easier to read and check, and you can copy it back into your code, editor or API tool without changing the data.
What happens if my JSON is invalid?
The tool shows a clear error message with the position where parsing failed, so you can find the problem quickly. Common causes are missing commas, unmatched brackets, trailing commas and unquoted keys, which you can fix and validate again instantly.
What is the difference between Format and Minify?
Format adds indentation and line breaks to make JSON readable for people, while Minify removes all unnecessary spaces and line breaks to make it smaller. Use formatted JSON for debugging and minified JSON for compact storage or network requests where size matters.
Is my JSON data uploaded anywhere?
No, formatting and validation run entirely in your browser, so your data never leaves your device. That makes the tool safe for testing API responses and configuration files, though you should still avoid pasting live passwords or secret keys anywhere.