JSON Formatter & Validator

Paste raw JSON to beautify indentation, validate syntax errors with line numbers, inspect nested trees, and minify code for production.

Key Features

• Precise line & column error pinpointing for invalid JSON
• Auto-repair common JSON errors (missing quotes, trailing commas)
• Interactive collapsible tree view visualizer
• One-click JSON minification and string escaping/unescaping

Frequently Asked Questions

Is the JSON Formatter & Validator free to use?

Yes, DODDY's JSON Formatter & Validator is 100% free with no account registration, subscriptions, watermarks, or usage limits.

Can this tool fix trailing commas in JSON?

Yes! The Auto-Repair feature cleans up trailing commas, unquoted keys, and single-quote strings.

Is my JSON data kept private?

Yes. JSON formatting runs entirely in your local JavaScript thread without any network request.