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{ } JSON Formatter & Validator

Paste raw or minified JSON to format it with proper indentation, validate it for syntax errors, and copy the prettified output. Runs 100% in your browser.

Input JSON

Type or paste JSON above to validate

Indent: Sort keys

Formatted Output

About this tool

All processing happens locally in your browser using the native JavaScript JSON.parse() and JSON.stringify() APIs. No data is transmitted to any server.

Useful for: debugging API responses, cleaning up minified configs, and validating hand-written JSON before submitting it.