About JSON Formatter

About This Tool

JSON Formatter is a free online tool for developers and data professionals. Instantly format compressed JSON data, check for errors, minify, and repair broken JSON — all in your browser without sending data to any server.

Key Features

• JSON Beautify (2 spaces, 4 spaces, or tab indentation)
• JSON Minify
• JSON Validation with detailed error messages
• JSON Repair (trailing commas, single quotes, bracket mismatches, and more)
• Copy output to clipboard
• 100% free, ad-supported

Privacy

All JSON data is processed locally in your browser. Nothing is sent to a server, making it safe to use with sensitive data such as API keys and tokens.