JSON Formatter & Validator – Beautify JSON Online

Format, validate, and minify JSON code. All processing happens locally – your data stays private.

How to Use

Paste any JSON code. Click "Beautify" to add indentation and line breaks. Click "Minify" to remove whitespace. Click "Validate" to check for syntax errors. The tool uses the browser's built‑in JSON parser, so it's fast and accurate.

FAQs

Does this support JSON5 or comments?

No – only standard JSON. Comments are not allowed in proper JSON.

Is my data safe?

Yes – everything runs in your browser. No network requests are made.