JSON Formatter & Validator
Format, validate, and beautify JSON with AI-powered error explanations.
About JSON Formatter & Validator
Paste your JSON to instantly format, validate, and beautify it. Get clear error messages with AI-powered explanations when your JSON is invalid. Supports minification, tree view, and copy-to-clipboard.
Frequently Asked Questions
What is JSON?▾
JSON (JavaScript Object Notation) is a lightweight data format used to exchange data between servers and web applications. It's human-readable and easy for machines to parse.
Why does my JSON fail validation?▾
Common issues include trailing commas after the last item in an array or object, single quotes instead of double quotes, unquoted keys, and missing commas between elements.
Is my data safe?▾
Yes. All formatting and validation happens entirely in your browser. Your JSON is never sent to any server.
Can I minify JSON here?▾
Yes. After formatting, use the minify option to remove all whitespace and produce compact JSON suitable for production use.
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