CSS Minifier

Minified CSS is the same rules with comments and needless whitespace removed, which cuts bytes on the wire. The cascade and selectors stay. Developers keep the readable file and deploy the minified one.

What you get from CSS Minifier is concrete. Comments and extra whitespace are removed. The size comparison is shown beside the output. Your source file is not changed. You copy the result. Read those results before you paste them into a template, a file, or a ticket. A copied mistake is harder to see later than a mistake still on this page.

A careful pass on CSS Minifier looks like this. Start with real input, not a placeholder you do not understand. Paste the CSS. Then check the middle of the form, because that is where optional fields change the output. Read the minified output. Finish by reading the whole result, not only the first line. Copy the minified CSS into the file browsers should load.

The limit is the part people skip on CSS Minifier. Match the output to the input you actually typed, then decide whether it belongs on the live site. No. The minified text is produced in the browser. The size comparison is shown beside the output.

A second reading of CSS Minifier is worth it because the first pass is easy to rush. Say out loud what the output is claiming. Comments and extra whitespace are removed. The size comparison is shown beside the output. Your source file is not changed. You copy the result. Then say what it is not claiming. It removes comments and whitespace. Check the output if a comment contained something you still need. No. The minified text is produced in the browser. The copied minified CSS. Keep the original for the next edit. If those two speeches disagree, change the input or pick a different tool. CSS Minifier will not resolve the disagreement for you.

Read CSS Minifier once more as a single job. Part 1: Paste the CSS. Part 2: Read the minified output. Part 3: Compare original size and minified size. Part 4: Copy the minified CSS into the file browsers should load. You should be able to point at this in the result: Comments and extra whitespace are removed. You should be able to point at this in the result: The size comparison is shown beside the output. You should be able to point at this in the result: Your source file is not changed. You copy the result. Does CSS minifying change selectors? It removes comments and whitespace. Check the output if a comment contained something you still need. Is the stylesheet uploaded? No. The minified text is produced in the browser. What should I deploy? The copied minified CSS. Keep the original for the next edit. Who is CSS Minifier for? CSS Minifier is for someone already doing developer tools work who needs minify CSS files by removing whitespace and comments. Minified CSS is the same rules with comments and needless whitespace removed, which cuts bytes on the wire. The cascade and selectors stay. Developers keep the readable file and deploy the minified one. The first field was filled with a real value: Paste the CSS. The result was read: Comments and extra whitespace are removed. Optional fields were either filled or left empty on purpose. The copy went into the place the last step names. The boundary in the guide was respected before anything was published.

Keep CSS Minifier as this step only. When the job moves on, the HTML Minifier is the next page: HTML Minifier removes extra whitespace, line breaks, and comments from HTML you paste and shows the original size, the minified size, and the reduction. The JavaScript Minifier covers a different piece of the same work: JavaScript Minifier strips comments and extra whitespace from script you paste and shows the size reduction.