CSS comment remover

Remove comments from
CSS code.

Remove /* CSS comments */ from stylesheets online. Preserves selectors, custom properties, and string values inside content.

Open the toolUse the API or CLI
Free, no signup Runs in your browser Instant, no upload Works on .css files

Before and after

Real-world CSS code on the left. The same code with every comment removed on the right.

css-input.css
/* ===== Reset ===== */
* { box-sizing: border-box; } /* universal */

/* Theme tokens */
:root {
  --color-bg: #fff;     /* light background */
  --color-fg: #000;     /* foreground */
  --radius: 8px;        /* base radius */
}

/* Layout */
.container {
  max-width: 1200px; /* wide */
  margin: 0 auto;
}

/* Buttons */
.button {
  background: var(--color-fg);
  color: var(--color-bg);
  border-radius: var(--radius);
}
css-output.csscleaned
* { box-sizing: border-box; }

:root {
  --color-bg: #fff;
  --color-fg: #000;
  --radius: 8px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.button {
  background: var(--color-fg);
  color: var(--color-bg);
  border-radius: var(--radius);
}
Why use it

Built for CSS specifically.

CSS files often include section banners, browser-compatibility notes, and licensing headers that aren't useful in production. Stripping them out reduces stylesheet size and removes implementation hints from view-source. Uncommenter handles every flavor of CSS comment in a single pass.

  • /* */ block comments removed
  • Selectors, declarations, and at-rules preserved
  • url("...") values containing /* preserved
  • CSS custom properties (--name: value) untouched
  • Auto-detected from .css files
How it works

Strip comments in 30 seconds.

  1. 1

    Open the tool

    Head to uncommenter.com/tool. Nothing to install. Nothing to sign up for.

  2. 2

    Paste your CSS code

    Drop your .css file in, or paste code into the editor. Auto-detection picks up CSS from the extension or file content.

  3. 3

    Click 'Remove Comments'

    The parser walks every character with a real state machine, strings, regex, and other context-sensitive parts are detected and left alone.

  4. 4

    Copy or download

    Grab the cleaned output. Your code never left your browser.

FAQ

CSS questions, answered.

What about SCSS or Sass?

+

SCSS adds // line comments on top of CSS's /* */ blocks. Use the dedicated SCSS landing page for .scss / .sass files.

Are values with /* inside url() safe?

+

Yes. The parser treats url("...") and url('...') contents as string literals, so any /* inside is preserved verbatim.

Will it break my media queries?

+

No. At-rules like @media, @supports, and @keyframes are language syntax and are always preserved.

Other languages

Working in something else?

JavaScriptTypeScriptPythonJavaCC++C#Go

Plus 35+ more languages supported in the live tool , including HTML, YAML, Dockerfile, Terraform, Solidity, and more.

Try it on your CSS code now.

Free forever. No signup. No upload. Runs entirely in your browser.

Open uncommenter