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JSON FORMATTER & VALIDATOR

JSON Formatter & Validator

Format, minify, and validate JSON in real-time directly in your browser. Total privacy: 100% client-side without sending data to servers.

🔒 Your data never leaves your browser. Formatting and validation run 100% locally.

Indentation:
Output JSON
output.json

Paste or type JSON in the input panel to see the formatted output.

Note: JSON.parse orders numeric keys first and may lose precision on integers exceeding 53 bits.