JSON Minifier
JSONMinify and format JSON with size stats
Where JSON Formatter is built around pretty-printing and error diagnosis, this tool leads with the opposite job: stripping whitespace before storing JSON in a database column or environment variable, and it pairs that with before/after size stats so you can see exactly how many bytes you're saving on a payload that's billed by size. The transformation is strictly lossless: only whitespace is removed, keys, values, and structure stay identical, so there's no risk of silently changing the data. Actual savings vary a lot by input: deeply nested, heavily indented JSON can shrink 20-40%, while already-compact JSON won't shrink much further. It also runs the reverse direction (format mode) if you need to read a minified blob rather than just measure it, and everything happens locally in the browser.
How to use JSON Minifier
- 1.Paste formatted JSON and minify it to strip all whitespace before storing it in a database column or environment variable.
- 2.Check the before/after size stats to see exactly how many bytes you're saving for a payload sent over a metered API.
- 3.Paste minified JSON and switch to format mode when you need to read or debug it instead.
Frequently asked questions
Use via API, SDK, or MCP
cURL# Free: 1,000 req/day · Pro: 10,000 req/day
curl -X POST https://api.utilix.tech/v1/tools/json-minifier \
-H "Authorization: Bearer utx_live_..." \
-H "Content-Type: application/json" \
-d '{"input":"{ \"a\": 1 }"}'Get an API key from your dashboard · Full API docs →