CSS Minifier

CSS Minifier is a free online CSS Tools tool that compress CSS for production instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

Description

Compress CSS for production.

  • Because everything is computed client-side, CSS Minifier is safe to use with sensitive data such as API keys, tokens or private logs.

How to use

Using CSS Minifier takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.

Examples

These ready-made examples show typical inputs and the exact output CSS Minifier produces for them.

.a {
  color: red;
  margin: 0 auto; /* keep */
}

Safe whitespace collapse.

Use cases

Common situations where CSS Minifier helps:

  • Compress CSS for production.
  • Because everything is computed client-side, CSS Minifier is safe to use with sensitive data such as API keys, tokens or private logs.

FAQ

What is CSS Minifier?

CSS Minifier compress CSS for production. It runs entirely in your browser, so your data stays private.

Is CSS Minifier free to use?

Yes. CSS Minifier is free, unlimited and works without registration or installation.

Does my data get uploaded?

No. All processing happens locally in your browser; nothing is sent to any server.

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