JSON Formatter & Validator

A JSON Formatter takes raw or minified JSON and adds proper indentation and line breaks, making it easier to read and understand. It also validates that the JSON is syntactically correct.

Yes. The formatter validates your JSON as you type and highlights any syntax errors with the specific line number where the error occurs, making it easy to find and fix issues.

Formatting adds whitespace and indentation for human readability. Minifying removes all unnecessary whitespace to reduce file size — useful for production APIs and data transfer where every byte counts.

Completely. All JSON processing happens in your browser using JavaScript. Your data is never sent to any server.

Yes, the formatter handles large JSON files efficiently. For very large files (>10MB), consider pasting just the section you need to inspect.

You can choose between 2 spaces, 4 spaces, or tab indentation to match your project's coding style.