JSON Minifier Online

Minify JSON to a single line — runs locally in your browser. No uploads.

Paste JSON and click Minify
Tip: press Ctrl/⌘ + Enter to validate.  •  0 chars Privacy: processing stays on your device.

Minify JSON instantly

This JSON minifier compresses JSON into a single line, making it smaller and easier to send or store. Everything runs in your browser.

What is JSON minification?

Minifying removes extra whitespace and line breaks without changing the data.

How to use

Paste JSON above and click Minify. Use Format to pretty-print it again.