JSON Formatter & Validator
Beautify, validate, and minify JSON data with instant syntax error detection.
100% Private & Client-Side
Your files are processed directly on your computer or phone. They are never uploaded to any remote server or stored anywhere.
How to use JSON Formatter & Validator
Paste your raw or minified JSON into the editor.
Choose 'Beautify (2 Spaces)', 'Beautify (4 Spaces)', or 'Minify'.
Copy formatted output or download it as a .json file.
Frequently Asked Questions
Is my JSON data kept private?
Yes, 100%. Parsing and formatting happen exclusively in your browser memory. Your sensitive API payloads or credentials never leave your device.
Does it show syntax error locations?
Yes, if your JSON is invalid, the validator highlights the exact parse issue to help you fix missing brackets or quotes.
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