JSON Minifier
Minify JSON and reduce payload size
π 100% client-side β your data never leaves this pageInput
Output
Minified JSON will appear here
π 100% client-side
About this tool
Paste pretty-printed or raw JSON and instantly get a compact minified version. The tool validates your JSON before output, reports clear syntax errors, and shows input/output byte savings so you can quickly estimate transfer and storage impact. Everything runs in your browser for privacy-safe processing.
Frequently Asked Questions
What is the difference between JSON minify and JSON format?
Formatting adds whitespace for readability, while minifying removes unnecessary whitespace to reduce size. Both represent the same data when valid.
Will minifying JSON change data types or values?
No. Minification only removes spaces, tabs and line breaks outside string values. Keys, values and data types remain unchanged.
Is my JSON uploaded to a server?
No. This tool runs 100% client-side in your browser. Your JSON is never transmitted to any backend.