JSON Formatter

Upload a .json file or paste raw JSON. We instantly format it with proper indentation, highlight syntax errors, and let you download the cleaned file. Essential for API developers. 100% private.

Vos fichiers ne quittent jamais votre appareil. Traités localement. 100% privé.

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Comment utiliser JSON Formatter

Accomplissez votre tâche parfaitement en trois étapes simples.

Upload or Paste JSON

Drag and drop a .json file, or paste your raw, unformatted JSON data into the editor. We process it instantly.

Format and Validate

Our engine automatically formats the JSON with proper indentation. If there's a syntax error, we highlight the exact issue so you can fix it.

Copy or Download

Copy the perfectly formatted JSON to your clipboard, or download it as a clean .json file. 100% private and offline.

FAQ

Tout ce que vous devez savoir sur le JSON Formatter.

Is my JSON data secure?

Yes! All formatting and validation happens locally in your browser. Your JSON data never leaves your device and is never sent to any server.

Can it fix broken JSON?

It will catch and point out syntax errors (like missing quotes or trailing commas), but to prevent data corruption, you must manually fix the syntax before it can be formatted.

What indentation does it use?

The formatter uses a standard 2-space indentation for clean, readable output that matches typical developer standards.