HTML Minifier

HTML Minifier is a tool that strips out everything in your HTML that browsers don't need to render a page correctly — whitespace, line breaks, HTML comments, redundant attributes, and more. The result is a compact, single-line (or near-single-line) HTML file that is functionally identical to the original but significantly smaller in byte size.

For developers, every kilobyte counts. Smaller HTML files mean faster initial page loads, lower bandwidth costs, and better Core Web Vitals scores — all of which directly impact user experience and SEO rankings. Minifying HTML is a standard step in modern front-end build pipelines, and having a quick online tool to do it manually is invaluable for auditing templates, testing snippets, or processing files outside of a full build system.

Using the tool is straightforward: paste your raw HTML into the input panel and the minified output appears instantly. You can copy the result with a single click or download it as a file. The tool handles full HTML documents as well as partial fragments — so you can minify an entire page layout or just a component partial without any issues.

Under the hood, the minifier collapses consecutive whitespace characters (spaces, tabs, newlines) into single spaces or removes them entirely where safe to do so. It strips HTML comments () and removes optional closing tags and redundant attribute quotes where the spec permits it. Boolean attributes like disabled or checked are also collapsed to their shortest valid form.

One important edge case to keep in mind: whitespace inside <pre>, <textarea>, and <script> or <style> blocks is preserved, since collapsing it there would break functionality or visual rendering. Similarly, inline elements like <span> and <a> can be sensitive to whitespace between them — the minifier handles these conservatively to avoid introducing layout bugs. Always validate the minified output in your target browsers before deploying to production.