How to use Code Minifier

What Code Minifier does#

Reduce file size for production: minify JavaScript (Terser), CSS (CSSO) or HTML, then see how many bytes you saved and copy the result. 100% in your browser — your code never leaves the page.

How to use it#

Open the tool and paste or type your input.
Choose the options you want.
See the result instantly, updated as you work.
Copy it to your clipboard in one click.

Your privacy#

Code Minifier runs entirely in your browser. Your data never leaves your device — there is no upload, and nothing is stored on our servers.

Frequently asked questions

Is Code Minifier free to use?

Yes. Code Minifier is completely free and needs no account or sign-up.

Is my data private?

Yes. Code Minifier works entirely in your browser, so your data never leaves your device.

Do I need to install anything?

No. Code Minifier runs online in any modern browser, on desktop or mobile.