JSON Input
Output
JSON minification removes all unnecessary whitespace and newlines without altering the data. This reduces payload size for REST API responses, localStorage entries, and bundled configuration files.
The tool uses JSON.parse() before minifying, catching syntax errors before outputting. If the JSON is invalid, you'll see a descriptive error message pointing to the problem.
Also works as a JSON beautifier. Paste minified JSON and click Beautify to get properly indented, human-readable output — great for debugging API responses.
JSON.parse + JSON.stringify is the most reliable and fastest minification approach possible. No regex hacks — the result is always valid, compact JSON.
© Live HTML Viewer | All Tools →