$ json-fmt

JSON Formatter

Pretty-print, minify and validate JSON with clear error messages.

Indent

Input

Output

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About this JSON formatter

Paste any JSON and click Format to indent it consistently, or Minify to strip whitespace for transport. Invalid JSON shows the parser error and the approximate position so you can fix it quickly.

Common JSON errors

Trailing commas, single quotes instead of double quotes, and unquoted keys are the usual culprits. JSON does not allow comments.