JSON Formatter & Validator Online (JSON Beautifier & XML Formatter)

JSON or XML copied from an API response or server log is often minified to a single line to save space. To inspect the structure and analyze the data, format it with indentation that reflects its hierarchy.

• Improve readability: to understand complex nested structures at a glance.
• Catch errors: instantly flags JSON errors such as missing commas or unmatched brackets.
• Convert both ways: When you're ready to deploy, you can also minify neatly formatted code into a single line.

Uploaded files never leave your device. All processing uses your local computer.

Yes. A JSON Formatter or JSON Beautifier turns compact or hard-to-read JSON into readable output with indentation and line breaks. This tool also validates JSON syntax and supports Minify.

Use indentation management for human reading and review, and use Minify when you want to reduce whitespace for transmission and distribution. The original data structure is maintained, but only the way it is displayed changes.

JSON is syntax-validated with JSON.parse. XML is formatted and minified only. For XSD or XML Schema validation, use a dedicated XML Validator or XSD Validator.