JSON Minifier

Compress JSON by removing whitespace. Free, private & fast – 100% in browser.

Input JSON
Minified JSON
All minification runs entirely in your browser. Your JSON is never uploaded to our servers. No data is stored, logged, or transmitted.

Examples & Usage

Formatted JSON

Sample JSON with indentation and whitespace

Minified Output

Same JSON with all whitespace removed

Frequently Asked Questions

What does JSON minification do?

Minification removes all unnecessary whitespace (spaces, newlines, tabs) from JSON, producing the smallest valid representation. Optionally, you can also remove null and empty string values for even smaller output.

Is my data safe?

Yes. All processing happens locally in your browser. No data is sent to any server.

What is 'Remove null & empty strings'?

When enabled, the tool strips null values and empty strings from objects. Use with caution – this changes the structure and might not be suitable for all use cases.

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