mtools.lol

JSON Minifier

Remove all whitespace from JSON to make it as small as possible.

How it works

  1. 1Paste your JSON.
  2. 2It is validated and minified as you type.
  3. 3Copy or download the result.

Features

  • Removes every unnecessary space and line break.
  • Shows bytes saved.
  • Reports errors with line and column.
  • Private: runs in your browser.

Frequently asked questions

Does minifying change the data?

No. Only whitespace between tokens is removed; values stay identical.

Can I pretty-print it again?

Yes, with the JSON Formatter.

Is my data sent anywhere?

No. Everything runs in your browser; nothing is uploaded.

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