100% local — your data never leaves your browser

JSON Minifier — Free Online Developer Tool

Minify JSON online: strip whitespace and line breaks to shrink it down to a single compact line. Free, private and 100% in your browser.

Instant Private Zero cookies

JSON input

JSON output

What this tool does

Minify JSON online: strip whitespace and line breaks to shrink it down to a single compact line.

Private by design

Everything runs locally in your browser with JavaScript. Your data is never uploaded, which makes the tool safe for sensitive content, and it keeps working offline.

Frequently asked questions

Is my data sent to a server?
No. Everything runs locally in your browser and nothing is uploaded, so the tool is safe even for sensitive data.
Does minifying change my data?
No. Only insignificant whitespace and line breaks are removed; the parsed content stays exactly the same.

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