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HTML / CSS / JS Minifier

Minify HTML, CSS and JavaScript in your browser and see the exact size savings.

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About this tool

Smaller files mean faster pages. Paste HTML, CSS or JavaScript and get a safely minified version — comments and whitespace stripped, with before/after byte counts and gzip-estimated savings. Everything runs locally in your browser.

How to use the HTML / CSS / JS Minifier

  1. Pick the language tab and paste your code.
  2. Click Minify and review the size report.
  3. Copy or download the minified output.

Frequently asked questions

Is minification safe?

The minifier is conservative: it strips comments/whitespace without rewriting logic, so output behavior is unchanged.

Does minification help SEO?

It reduces transfer size, improving load metrics that feed Core Web Vitals.

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