Format, minify, and validate JSON right in your browser. Paste any JSON to beautify it with customizable indentation, minify it for production, or validate it with instant error feedback. No data leaves your device.
Built for speed, privacy, and real-world workflows.
Pretty-print JSON with 2 or 4 space indentation for readability, or minify it to a single line for production use.
Get real-time feedback on whether your JSON is valid, with detailed error messages when something is wrong.
Copy the formatted output to your clipboard or download it as a .json file — no account needed.
All processing happens locally in your browser. Your JSON data is never sent to any server.
Four simple steps. No sign-up needed.
Paste raw JSON into the input panel. The formatter instantly shows whether it’s valid.
Pick 2 or 4 space indentation for the beautified output.
Click "Beautify" to pretty-print or "Minify" to compress to one line.
Grab the result from the output panel — copy to clipboard or download as a .json file.
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