Free Online JSON Minifier
JSON input
Free Online JSON Minifier
Compress formatted JSON into the smallest valid string—ideal for logs, HTTP bodies, and configs. All local in the browser.
Features
Standard compact output
Removes extra whitespace while keeping valid JSON.
Validate first
Syntax errors are reported before minify runs.
Copy & download
Copy or download the minified result as .json.
FAQ
- Does minify change data?
- No. Only whitespace is removed; parsed data is identical.
- Minify vs format?
- Format adds indentation for reading; minify removes whitespace to shrink size.