JSON Minifier
Strips every space, tab and newline that carries no meaning. Useful before embedding a config blob in a page or shipping it over a metered connection.
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Nothing you enter here is sent anywhere. There is no file and no request to our server - the work is done in your browser and disappears when you close the page.
How It Works
- Paste — Type or paste your text into the box above.
- Configure — Choose the transformation you want.
- Run — Press the action button; the counters update as you type.
- Take it — Copy the result or download it as a file.
Frequently Asked Questions
What happens when my JSON is invalid?
The tool parses it with a real JSON parser and reports the failure with the character offset, plus the surrounding text so you can find the missing comma or quote. Nothing is sent anywhere.
Does formatting change my data?
No. Number, string and boolean values are preserved exactly; only whitespace changes. Duplicate keys follow the browser parser rule where the last occurrence wins.