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JSON Formatter Pro

Format, validate, and minify JSON in real-time. Syntax highlighting, detailed error messages, and one-click copy — all in your browser.

Tool

Input JSON

Ctrl+Enter to process

Output ready

Click "Format" to begin

Frequently Asked Questions

What does the JSON formatter do?

It takes raw, compact, or malformed JSON and formats it with proper indentation, line breaks, and syntax highlighting for readability.

Is my JSON data sent to a server?

No. All formatting, validation, and minification happens entirely in your browser. Your data never leaves your device.

What happens if my JSON is invalid?

The tool will display a clear error message showing the line and position of the issue, along with what was expected vs what was found.

Can I minify JSON with this tool?

Yes. Click the 'Minify' button to compress your JSON into a single line — perfect for API payloads and storage optimization.

What's the difference between format and validate?

Format beautifies the JSON with indentation. Validate checks if the JSON is structurally correct. Both run simultaneously — if it formats, it's valid.

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