JSON Formatter
JSON formatting makes nested API responses and configuration files easier to inspect. This formatter parses your input as JSON, then writes it with consistent indentation.
Quick answer
Format and beautify JSON with readable indentation in your browser. Validate syntax while formatting and copy or download the result. The core operation is designed for quick browser-based use without an account.
How to use this tool
- Paste valid json
- Run the formatter
- Review the parsed structure
- Then copy or download the formatted result.
Common errors and things to check
A trailing comma, missing quote, or unmatched bracket will make otherwise familiar JSON invalid. Check the reported line and column first.
Common use cases
- Readable API responses
- Debugging configuration files
- Preparing JSON for documentation
Privacy and local processing
Core processing for this tool is designed to happen in your browser. The page does not intentionally upload ordinary tool input to a DataToolBase server. Do not paste passwords, private keys, access tokens, personal data, or other sensitive secrets unless you have verified the security requirements for your use case.
Frequently asked questions
Does formatting change JSON data?
It changes whitespace and indentation, not the parsed JSON values.
Can I format JSON locally?
Yes. The core formatter performs parsing and formatting in the browser.