JSON Minifier
Minifying JSON removes every unnecessary space, tab, and newline, shrinking the payload without changing the data. Paste your JSON to get a compact single-line version and see exactly how many characters you saved — handy for APIs, configs, and reducing bandwidth.
- Free — no sign-up
- Private — runs in your browser
- Instant results
How to use the JSON Minifier
- 1Paste your JSON. Drop in formatted or messy JSON.
- 2Minify. Get a compact, single-line version with all whitespace removed.
- 3Copy the result. Grab the minified output and see the size reduction.
Frequently asked questions
Is minified JSON still valid?
Yes. Minifying only removes insignificant whitespace, so the structure and values are identical — it parses exactly the same as the formatted version.
What's the difference between minifying and formatting JSON?
Minifying strips whitespace to make JSON as small as possible for machines; formatting (beautifying) adds indentation to make it readable for humans. They're opposites.