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JSON Formatter

Instantly validate and pretty-print any JSON file right in your browser. Choose 2 or 4 space indentation, optionally sort keys, and preview before downloading. Your data never leaves your device.

🔒 Processing happens in your browser — files are never uploadedFree · No sign-up required

How to Use

1Upload or drag a .json file.
2Choose indentation and key sorting options.
3Click Format and download the result.

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Why use ShowPro's JSON Formatter?

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100% Private

Files never leave your browser. Zero server uploads.

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Instant Results

Processing happens locally — no waiting for uploads.

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Completely Free

No account needed. Use 5 times per day, always free.

Frequently Asked Questions

Is my JSON data sent to a server?

No. All processing is done entirely in your browser.

What if my JSON is invalid?

The tool shows a clear error message with the location of the syntax error.