Minify and compress HTML markup to reduce file size, improve Core Web Vitals, and boost page load speed. All processing happens in your browser — no data sent to servers.
Remove whitespace, comments and redundant code from HTML
Strip all HTML comments to keep production code clean
Minification keeps all attributes, tags and functionality intact
Shows original vs minified size with % reduction
Copy minified HTML to clipboard instantly
Smaller HTML files load faster and improve Core Web Vitals
Paste your HTML source code into the input text area.
Click Minify HTML to compress and clean the code.
See the original vs minified file size comparison.
Copy the minified HTML and replace your source file.
Every byte counts on the modern web. When a user visits your website, their browser downloads your HTML file before it can render anything — this is the critical path that determines how fast the first content appears. Unminified HTML files contain significant overhead: indentation spaces, line breaks, developer comments, and redundant attributes that browsers don't need.
HTML minification removes this unnecessary data, reducing file size and the time it takes browsers to download and parse the document. This directly improves your Largest Contentful Paint (LCP) score — one of Google's Core Web Vitals ranking factors. For large e-commerce or content sites with hundreds of pages, HTML minification combined with GZIP compression can reduce HTML payload by 70-80%.
Strips all HTML comments (<!-- ... -->) except IE conditional comments. Safe for all websites.
Reduces multiple spaces and tabs to a single space. Removes the indentation added for code readability.
Merges multi-line HTML into a single line. Combined with whitespace collapse for maximum size reduction.
HTML5 allows omitting closing tags for </li>, </p>, </tr> etc. More aggressive — test before deploying.
Removes quotes from simple attribute values (e.g., class=hero instead of class="hero"). Test carefully.
Converts uppercase tags like <HTML> to <html>. Marginally smaller and follows HTML5 conventions.
HTML minification removes all unnecessary characters — comments, extra whitespace, line breaks, optional tags, and redundant quotes — without changing how the HTML renders. The result is a smaller file that browsers download and parse faster, improving page load speed and Core Web Vitals scores.
Typically 10-30% for standard HTML files. Heavily commented or heavily indented files can see reductions of 30-40%. When combined with GZIP server compression, total bandwidth savings can reach 70-80% compared to the original uncompressed, unminified file.
Removing comments and collapsing whitespace is completely safe. Removing optional tags and attribute quotes is more aggressive — test these in a staging environment. Always keep the original unminified HTML as your development source and only serve minified HTML in production.
Yes, indirectly. Google uses Core Web Vitals (LCP, FID, CLS) as ranking factors. HTML minification contributes to faster page loads, which improves these scores. Google's PageSpeed Insights specifically recommends minifying HTML, CSS, and JavaScript as a performance optimization.
For production websites, automate HTML minification in your build process using tools like Webpack, Vite, or Gulp. This ensures every page is always minified without manual work. This tool is ideal for quick one-off minification or checking specific pages before setting up an automated pipeline.
Paste your HTML code into the input area. Click Minify to remove whitespace, comments, and optional attributes while preserving all functionality. Use the settings to control what gets minified: remove comments, collapse whitespace, remove optional tags, minify inline CSS and JS. Download or copy the minified output.
HTML is the first resource downloaded when a user visits a page. Reducing HTML size improves Time to First Byte (TTFB) and First Contentful Paint (FCP) — both Core Web Vitals factors. A typical HTML page can be reduced 20–40% through minification, saving bandwidth and improving load times globally.
HTML comments: — completely removed, no visual impact. Whitespace between tags: Multiple spaces/newlines collapsed to single space. Optional end tags: , , ,
are optional in HTML5. Attribute quotes: When safe, quotes around attribute values can be removed. Type attributes: type="text/css" and type="text/javascript" are default in HTML5.