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JSON Formatter & Validator
Paste messy or minified JSON and get a clean, properly indented, easy-to-read structure instantly. Validate your JSON, catch syntax errors with line numbers, and switch between beautified and minified output — all processed locally in your browser. Free, fast, and no signup required.
Indent:
Auto-formats on paste
Your JSON is processed locally and never uploaded anywhere.
Frequently Asked Questions
Everything You Need to Know About JSON Formatting & Validation
A JSON formatter takes raw, minified, or messy JSON data and rearranges it with proper indentation, line breaks, and spacing, making it easier to read and debug. This is especially useful when working with API responses, configuration files, or logs where JSON is often returned as a single unreadable line.
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