JSON Formatter

Beautify, validate and minify JSON with precise error locations. Format and validate JSON online. Pretty-print with 2 or 4 spaces, minify, and pinpoint syntax errors with line and column. Free JSON beautifier for developers.

Dieses Werkzeug läuft zu 100 % in Ihrem Browser. Ihre Eingaben werden nie an einen Server gesendet — Sie können nach dem Laden sogar offline gehen.

Über JSON Formatter

A single misplaced comma can break a 2,000-line config file. Paste any JSON here to pretty-print it with your preferred indent, minify it for production, or validate it with error reporting that points to the exact line and column of the problem. The formatter handles large payloads, preserves your data exactly, and includes a key-sorting option for diff-friendly output — all locally in your browser.

So verwenden Sie JSON Formatter

  1. Paste your raw or minified JSON into the editor.
  2. Click Format to pretty-print, or Minify to compact it.
  3. Fix any syntax error where the validator points you.
  4. Copy the result back into your project.

Wichtigste Funktionen

Is my JSON sent to a server?
No. Parsing and formatting happen in your browser with the native JSON engine, so API responses, secrets and config files stay on your machine.
What JSON dialect is supported?
Standard JSON as defined by RFC 8259 — the same rules used by JSON.parse. Trailing commas, comments and single quotes are invalid and will be reported as errors.

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