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JSON Formatter

Beautify, minify, and validate JSON instantly — with readable errors and an optional auto-fix.

Paste JSON to get started

Input

Output

JSON formatter FAQ

Beautify vs minify

Beautify pretty-prints with indentation so humans can read APIs and configs. Minify strips insignificant whitespace for smaller payloads or paste targets that expect compact JSON.

Where do errors point?

Invalid JSON surfaces a readable message with a line number when the parser can locate it. Fix the highlighted input and beautify again.

Does anything leave my machine?

No. Formatting and validation use the browser’s JSON parser only — useful when pasting secrets or internal payloads you should not send to an online formatter.