JSON
JSON Minifier
Minify JSON for transport, fixtures, or compact storage while checking before and after character counts.
Runs locally in your browser. Your input is not uploaded.
How this tool works
JSON minification strips indentation and line breaks while preserving the parsed data structure.
The size comparison helps you see how much whitespace was removed.
Examples
- Minify a sample API response before embedding it in a test.
- Download compact JSON for a small static data file.
Common use cases
Compact fixtures
Payload examples
Static data files
FAQ
Does minifying JSON remove data?
No. It removes whitespace outside strings after parsing and serializing the JSON value.
Why must JSON be valid first?
Parsing first prevents producing misleading output from malformed input.