HTML Minifier

Compress your HTML code by removing unnecessary whitespace, comments, and redundant attributes.

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What Is an HTML Minifier?

An HTML Minifier reduces the size of your HTML code by removing unnecessary characters without changing its functionality. This process — also known as HTML compression or HTML minification — strips whitespace, comments, redundant attributes, optional closing tags, and more to create a smaller, more efficient version of your HTML.

Smaller HTML files load faster, consume less bandwidth, and can improve your website's Core Web Vitals, including LCP (Largest Contentful Paint) and FCP (First Contentful Paint). This tool uses html-minifier-terser under the hood, giving you fine-grained control over which optimizations to apply through eight configurable options.

Common use cases include optimizing HTML before deploying to production, reducing page weight for better mobile performance, preparing HTML snippets for email templates (which benefit from minimal size), and integrating minification into your development workflow.

How to Use This HTML Minifier

  1. Paste your HTML — Enter your HTML code into the input textarea, or click Example to load sample HTML.
  2. Customize options — Toggle the minification options: collapse whitespace, remove comments, remove empty/redundant attributes, minify inline CSS and JavaScript, remove optional tags, and collapse boolean attributes.
  3. Click Minify HTML — Press the button to compress your code. Size statistics show original, minified, and percentage saved.
  4. Copy the result — Use the copy button to copy the minified HTML to your clipboard for use in your project.

Frequently Asked Questions

Does HTML minification affect SEO?

No. Search engines like Google index the rendered DOM, not the raw HTML source. Minifying HTML does not affect SEO — in fact, faster page load times from minification can positively impact rankings.

Is my HTML code stored on a server?

No. All processing happens entirely in your browser. Your HTML code never leaves your device.

What is the difference between minification and compression?

Minification removes unnecessary characters (whitespace, comments) from the code itself. Compression (like Gzip) encodes the entire file at the transport level. Both are complementary — you should minify your HTML and then serve it with Gzip compression for best results.

Will minification break my HTML?

html-minifier-terser is designed to preserve functionality. However, some edge cases (like JavaScript strings containing HTML-like content) can behave differently. Always test minified output in your target environment.

Can I minify inline CSS and JS?

Yes. Enable the Minify CSS in style and Minify JS in script options. Inline CSS is minified with clean-css, and inline JavaScript with Terser, all within your browser.

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Last updated: 9 Jul 2026

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