Tiny Toolkit

JSON Minifier

Strip all indentation and whitespace from your JSON to produce a compact single-line output with no change to the data itself. The tool shows the original size, minified size, and exact bytes saved so you can see the impact. Use minified JSON in API responses, embedded config strings, and anywhere else where file size matters.

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

Frequently Asked Questions

What does JSON minification do?
It removes all whitespace, newlines, and indentation that are not part of string values, reducing file size without changing the data.
How much file size reduction should I expect?
Typical savings are 20–40%, depending on how heavily indented the original JSON is.
Is the minified output still valid JSON?
Yes — minified JSON is semantically identical to the original and parses correctly in any JSON parser.

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