Data Conversion

JSON Formatter & Beautifier

Format, beautify, and validate your JSON data with our free online tool. Instantly pretty-print minified JSON, detect syntax errors with line numbers, and explore your data with an interactive tree view.

100% Client-SideNo RegistrationFree Forever

Characters: 0Lines: 0Nodes: 0Depth: 0

Auto-format on paste

Input JSON

Output (json-beautify)

Image Optimization

JSON Formatter

JSON Converter

About This Tool

100% Browser-BasedNo Data UploadsPrivacy-First

Frequently Asked Questions

What does JSON formatting do?

JSON formatting (beautifying) adds proper indentation and line breaks to make minified or compact JSON human-readable while preserving the data structure exactly.

Is my data safe?

Yes. Formatting happens entirely in your browser. No data is ever uploaded to any server.

Does it validate JSON?

Yes. The tool automatically detects and reports JSON syntax errors with descriptive messages.

Can I minify JSON too?

Yes. Use the Minify button to remove all whitespace and produce the most compact JSON representation.

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