Code minifier

Minify and beautify CSS, HTML, and JavaScript.

Language

Action

Open file

Input35 lines · 603 B

Minified

About Code minifier

Code Minifier strips whitespace and applies supported syntax transformations to shrink HTML, CSS, or JavaScript payloads.

Runs entirely in your browser. Your files never leave your device.

How to use it

1.Pick the language and make sure the source parses and passes its tests first.
2.Start conservative, and keep the comments or names that licenses, debugging, or runtime reflection depend on.
3.Minify, read the warnings and the savings, and run the result in the real environment.

Options

Dropping whitespace and comments is the low-risk saving.
The more aggressive transforms rename symbols and rewrite expressions for more.

Limitations

Dynamic evaluation, reflection, relying on automatic semicolons, template syntax, and old runtimes all break under aggressive transforms.
Minification is not encryption. A secret in client-side code is still a secret in client-side code.

Common questions

Does minifying protect my JavaScript?

No. The browser has to run it, so anyone can read it back. Never put secrets in it.

Why did my minified code stop working?

It leans on names, comments, evaluation, implicit semicolons, or syntax the transform does not support. Turn options off until it works, then re-enable them one at a time.

Next stepDiff viewerKeep an auditable source version and review the transform.

Common questions

Does minifying protect my JavaScript?

No. The browser has to run it, so anyone can read it back. Never put secrets in it.

Why did my minified code stop working?

It leans on names, comments, evaluation, implicit semicolons, or syntax the transform does not support. Turn options off until it works, then re-enable them one at a time.