JSON Minifier
To minify JSON, paste it and click Minify: all whitespace and line breaks between tokens are removed, producing the smallest valid JSON and showing how many bytes you saved.
- Free
- No signup
- Runs in your browser
How to use JSON Minifier
- 1Type or paste your input into the JSON Minifier.
- 2Choose any options you need.
- 3See the result update instantly.
- 4Copy the result or download it.
JSON Minifier: questions people ask
Does minifying change the data?
No. Only spaces and line breaks outside strings are removed; parsing the result gives exactly the same values.
How much smaller does it get?
Typically 10–30% for pretty-printed JSON. Gzip on your server compresses further.
Is my data uploaded when I use the JSON Minifier?
No. The JSON Minifier runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the JSON Minifier work on iPhone, Android and Mac?
Yes. The JSON Minifier runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the JSON Minifier free?
Yes. The JSON Minifier is free with no signup, no watermark and no daily limit.