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JSON Formatter

Format, validate and beautify JSON data with syntax highlighting. Also supports minification and error detection.

100% Private Browser-Based Free Forever

const tool = {
  name: 'JSON Formatter',
  type: 'browser-based',
  cost: free,
  privacy: true,
}

JSON Formatter

Raw JSON

Formatted Output

How to Use JSON Formatter

Paste your raw JSON into the editor

Click Format to beautify with indentation

Copy the formatted output or fix any errors shown

Why Use This Tool

100% Private

Your data never leaves your browser. Nothing is uploaded to any server.

Instant Results

Modern browser APIs deliver results in milliseconds with no waiting.

Free Forever

No subscriptions, no credits, no paywalls — ever.

Frequently Asked Questions

Does it validate JSON?

Yes — errors are highlighted with line numbers so you can fix them quickly.

Can it minify JSON too?

Yes — toggle between beautified and minified output.

Is there a size limit?

Up to 1 MB of JSON data.

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