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Tool processing happens entirely in your browser. Your input is never sent to our servers.
JSON minification removes all unnecessary whitespace from a JSON string — spaces, tabs, and newlines that exist only for human readability. The resulting compact string contains the exact same data but in fewer bytes.
Why it matters for performance: Every byte in an API response adds to network transfer time. For high-traffic APIs serving thousands of requests per second, the difference between formatted and minified JSON can translate to significant bandwidth savings. A typical API response that is 10KB formatted might be 7KB minified — a 30% reduction that compounds across millions of requests.
When to minify:
When NOT to minify:
The minification process also implicitly validates your JSON — if minification succeeds, the JSON is syntactically valid. If you need detailed error reporting, use the JSON Validator. To go the other direction, the JSON Formatter adds indentation back.