JSON Formatter & Validator

JSON formatting (also called beautifying or pretty-printing) is the process of adding proper indentation, line breaks, and spacing to JSON data to make it human-readable. This helps developers understand the structure of JSON data more easily, making it invaluable for debugging APIs, reading configuration files, and working with data.

To validate JSON, paste your JSON data into the input field and click the "Validate" button. The tool will check if your JSON follows the correct syntax rules. If there are errors, it will show you the exact line and character position where the error occurred, helping you quickly identify and fix issues like missing commas, unclosed brackets, or invalid values.

Beautify (format) adds indentation and line breaks to make JSON readable by humans. Minify removes all unnecessary whitespace, newlines, and formatting to reduce file size. Use beautified JSON for reading, debugging, and development. Use minified JSON for production environments, API responses, and data transfer where smaller file sizes improve performance.

Yes, this JSON formatter and validator is completely free to use. There's no signup required, no usage limits, and no advertisements. It's built by hafiz.dev as a free resource for the developer community.

Absolutely. All JSON processing happens entirely in your browser using JavaScript. Your data never leaves your computer and is never sent to any server. This makes the tool completely safe for sensitive data, API keys, configuration files, and any other private information you need to format or validate.