JSON Formatter & Validator
Paste your JSON to format, beautify, minify or validate it instantly. Syntax highlighted output. Runs entirely in your browser.
JSON Input
FAQ
What does JSON formatting do?
JSON formatting (or pretty-printing) adds proper indentation and newlines to make compact or minified JSON human-readable. It doesn't change the data structure.
What is JSON minification?
Minification removes all unnecessary whitespace and comments from JSON, reducing file size. Minified JSON is ideal for API responses and production configs where bandwidth matters.
How does JSON validation work?
This tool uses the browser's built-in JSON.parse() to validate your input. If parsing fails, it shows the exact error message including the position of the syntax error.
Is my JSON data safe?
Yes. All processing happens entirely in your browser using JavaScript. Your JSON never leaves your device and is not sent to any server.
What's the maximum JSON size this tool can handle?
There's no hard limit — it's bounded only by your browser's memory. In practice, JSON files up to 50 MB format instantly.
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