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JSON Minifier

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Minify JSON by removing all unnecessary whitespace, with built-in validation and a byte-size savings report. Optionally beautify instead. Private & instant.

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Privacy & Security

All processing happens locally in your browser — nothing is uploaded.

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update v1.0
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How to Use

Paste JSON to minify it. Errors are reported with the position; toggle Beautify to expand.

Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.

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