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Free HTML minifier - compress HTML instantly

A free online tool to minify HTML code and reduce the HTML file size
Fetch HTML from URL

💡 Enter any website URL to automatically fetch and minify its HTML. Works with most websites including Google, Wikipedia, and more.

Input HTML
Minification Options
Size Information
Original Size:
0 bytes
Minified Size:
0 bytes
Saved:
0 bytes (0%)

Why minifying HTML makes your site measurably faster

When a visitor loads your page, every single byte of HTML has to travel from your server to their browser before rendering can begin. Whitespace, code comments, and redundant tags are invisible to the user, but they’re real weight that slows every request.

HTML minification strips those characters out. The resulting file is functionally identical but physically smaller, which means it transfers faster, parses faster, and contributes to a lower Time to First Byte (TTFB) one of Google’s Core Web Vitals signals.

  • 20–30% Typical HTML size reduction
  • ~200ms Avg. latency saved on slow connections
  • 3x PageSpeed impact vs. unminified code

Note - Google has confirmed that page speed is a direct ranking factor for both mobile and desktop search. Minifying HTML is one of the fastest, lowest-risk performance wins available no framework changes, no server config, no risk of breaking your layout.

How to minify HTML in 3 steps (no tools to install)

  • Paste your HTML or enter a URL. You can drop in a full HTML document, a template partial, or any live webpage URL the tool fetches and loads the source automatically.
  • Choose your minification options. Remove extra whitespace, strip HTML comments, collapse line breaks, or apply all three. Each option is safe for production, they don’t affect how browsers render your page.
  • Copy or download your minified output. Instantly see original size, minified size, and bytes saved. Drop the output directly into your project, CDN, or build pipeline.

What gets removed and what stays untouched

Many developers worry that minifying HTML will break their layout or cause rendering issues. It won’t because the characters removed are ones browsers already discard during parsing.

Here’s what each option removes:

  • Extra whitespace - Multiple spaces between tags collapsed to one. Indentation removed. Invisible to users.
  • HTML comments - Everything inside <!-- --> tags. Code notes and debug markers stripped completely.
  • Line breaks - Newlines between tags removed. The DOM structure is fully preserved, only formatting disappears.

What is never touched: your actual tag structure, attributes, inline CSS, JavaScript, content text, or <pre> / <textarea> blocks where whitespace is meaningful.

Who should use an HTML minifier

  • Developers - Minify templates and partials before deploying to staging or production environments.
  • SEO professionals - Reduce page weight to improve Core Web Vitals scores and PageSpeed Insights results.
  • CMS users - WordPress, Shopify, and Webflow often output verbose HTML clean it before caching.
  • Email marketers - Trim bloated email HTML to stay within size limits and improve inbox deliverability.

Frequently Asked Questions

Yes. Minification only removes characters that browsers already ignore whitespace between tags, comments, and formatting indentation. Your page will render identically before and after minification. The only exception is content inside <pre> or <textarea> tags, where whitespace is meaningful, this tool preserves those blocks automatically.
Directly and indirectly, yes. Google's Core Web Vitals (particularly LCP and TTFB) are confirmed ranking signals, and smaller HTML files contribute to both. Beyond rankings, faster pages have lower bounce rates users are significantly more likely to leave a page that takes over 3 seconds to load, which sends negative engagement signals back to Google.
They're separate processes. HTML minification removes markup-level whitespace and comments. CSS minification collapses selectors and removes unused rules. JavaScript minification renames variables and removes dead code.
For one-off pages or auditing existing sites, manual minification with this tool is the fastest option. For projects with frequent deployments, consider automating it using tools like html-minifier-terser in a Node.js build step, or enabling HTML compression in your CDN.
Yes. All processing happens client-side in your browser, your HTML is never sent to our servers. This makes the tool safe to use with sensitive templates, internal tools, or production source code.

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