HTML Minifier – Compress HTML Online

Minifying HTML reduces the number of bytes the browser downloads. Smaller HTML means faster Time to First Byte (TTFB), quicker page renders, and lower bandwidth costs — especially important for high-traffic sites.

For most cases, yes. HTML comments serve no function in the rendered page. The only exception is IE conditional comments like <!--[if IE]> — this tool preserves those automatically.

According to the HTML5 spec, some closing tags are optional: </html>, </head>, </body>, </li>, </p>, etc. Browsers can infer these from context. Removing them saves a few bytes but may confuse developers reading the source.

Standard minification (removing whitespace and comments) is very safe. Removing optional tags is a more aggressive optimization and should be tested. Always minify a copy and verify the page renders correctly before deploying.

Collapse attributes removes extra whitespace around attribute values. For example, class = "foo" becomes class="foo". This removes redundant characters without changing the meaning.

Yes, for static HTML. Modern frameworks like Next.js minify HTML automatically. If you serve raw HTML files, minifying them before deployment reduces transfer size. Combine with Gzip/Brotli compression for maximum savings.

Savings vary with how much whitespace and how many comments your HTML has. Typical savings range from 5–30%. Combined with Gzip compression (which servers apply), the total reduction is usually 70–90% of the original file size.

This tool focuses on HTML structure — it removes HTML comments and whitespace. Inline <style> blocks and <script> content are preserved as-is. Use the CSS Minifier or JS Minifier tools to compress those separately.