JSON Formatter

Developer toolNew

Format, validate and minify JSON with helpful errors.

This tool runs entirely in your browser. Your files never leave your device — nothing is uploaded.

JSON to format

Output

Paste some JSON on the left, then beautify or minify it.

Step-by-step guideHow to Format and Validate JSON

Frequently asked questions

Is my JSON sent to a server?
No. Parsing and formatting happen entirely in your browser — your data stays private.
Can it minify as well as beautify?
Yes — switch between pretty-printed and minified output.

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