Are variable names mangled too?

No. For safety, only comments and unnecessary whitespace are removed — variable names are left unchanged. For actual production deployments, we recommend using a dedicated bundler.

Do CSS and JS minify differently?

CSS is fully compressed onto a single line, while JS keeps line breaks for syntactic safety and only removes whitespace and comments.

Is the code I enter sent to a server?

No. It's processed entirely in your browser.

Are JS variable names shortened?

No — only whitespace and comments are removed. Name mangling is a bundler feature (Terser, esbuild).

Does minified code still work?

Whitespace removal does not change behavior. For rare code relying on ASI, verify the output.

✂️ JavaScript / CSS Minifier

Removes comments and unnecessary whitespace to reduce file size. CSS is fully compressed onto one line; JS safely removes only whitespace and comments, without changing variable names.

CSS JavaScript

Input

Result

How to use

Choose CSS or JavaScript.
Enter your code.
Click "Minify" to see the result with comments/whitespace removed and the size reduction shown.

🎯 Use Cases

Reduce CSS/JS file size before deployment
Minify inline styles for email templates, etc.
Minimize size when sharing code

Example

Input

.button {
  color: #ffffff;   /* text color */
  background: #3366ff;
  padding: 10px 20px;
}

Output

.button{color:#ffffff;background:#3366ff;padding:10px 20px}

In CSS mode the tool strips comments and all unnecessary whitespace and line breaks, drops the trailing semicolon, and collapses everything onto one line. This example shrinks from 93 to 59 bytes, about 37% smaller.

What gets removed vs kept

Comments and unnecessary whitespace are stripped to cut size. CSS compresses to one line; JS only removes what is safe.

Target	Processing
CSS	All comments, spaces and newlines removed — one line
JS	Only comments and redundant whitespace — names and strings kept
Not done	Name mangling and dead-code removal — not a Terser-level optimizer
Caution	Check the output for edge cases like regex literals

FAQ

Are variable names mangled too?: No. For safety, only comments and unnecessary whitespace are removed — variable names are left unchanged. For actual production deployments, we recommend using a dedicated bundler.
Do CSS and JS minify differently?: CSS is fully compressed onto a single line, while JS keeps line breaks for syntactic safety and only removes whitespace and comments.
Is the code I enter sent to a server?: No. It's processed entirely in your browser.
Are JS variable names shortened?: No — only whitespace and comments are removed. Name mangling is a bundler feature (Terser, esbuild).
Does minified code still work?: Whitespace removal does not change behavior. For rare code relying on ASI, verify the output.