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HTML Minifier

Pro Features
Inline critical CSSRemove optional tags

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About HTML Minifier

HTML Minifier compresses HTML documents by removing unnecessary whitespace, comments, optional tags, and redundant attributes without affecting the rendered output. It is designed specifically for HTML5 and understands which whitespace is safe to remove and which must be preserved for correct rendering. Web developers and performance-focused teams use it to shave kilobytes off their HTML pages and improve time-to-first-byte metrics.

Key Features

  • Removes HTML comments, including conditional comments when configured
  • Collapses whitespace between tags while preserving content-significant spaces
  • Removes optional closing tags (</li>, </p>, </td>) where HTML5 allows it
  • Strips redundant attributes like type='text' on input and type='text/javascript' on script tags
  • Minifies inline CSS and JavaScript embedded within style and script tags
  • Shows document size before and after minification with byte-level precision

How to Use HTML Minifier

  1. 1

    Paste your HTML

    Copy the full HTML document or partial HTML markup you want to compress into the input editor.

  2. 2

    Select minification options

    Choose which optimizations to apply, such as removing comments, collapsing whitespace, and minifying inline scripts and styles.

  3. 3

    Click Minify

    Press the Minify button to generate a compressed version of your HTML that renders identically in browsers.

  4. 4

    Verify the output

    Review the minified HTML to ensure the structure is intact, especially around pre-formatted content, inline elements, and whitespace-sensitive areas.

  5. 5

    Deploy the minified HTML

    Copy the result and use it in your production pages, server-side templates, or static site generator output.

Common Use Cases

Static Site Optimization

Minify HTML output from static site generators like Next.js, Hugo, or Eleventy to reduce page sizes and improve load times across your entire site.

Server-Side Template Compression

Compress HTML rendered by server-side frameworks (Express, Django, Rails) before sending it to clients, reducing response sizes and time-to-first-byte.

Email HTML Optimization

Minify HTML email templates to reduce their size, which helps avoid clipping in email clients like Gmail that truncate messages over 102 KB.

AMP Page Compliance

Reduce HTML file size for Accelerated Mobile Pages where strict size limits apply and every byte of savings contributes to faster rendering.

Why Use Our HTML Minifier

This HTML-specific minifier understands which whitespace is safe to collapse and which optional tags can be removed, going far beyond generic text compression. It also minifies inline CSS and JavaScript embedded in style and script tags in a single pass. No account or installation needed -- just paste, minify, and deploy smaller pages instantly.

Page Markup Stays in Your Browser

HTML pages often contain embedded user data, internal links, hidden form fields, and inline scripts with sensitive logic. The HTML Minifier compresses everything client-side with no external requests. Your page structure, embedded secrets, and internal URLs are never exposed to third parties.

Frequently Asked Questions

Will minifying HTML break my page layout?
The minifier is designed to only remove whitespace that does not affect rendering. However, if your CSS relies on whitespace between inline elements (like a space between inline-block items), you should test the minified output. Most modern CSS layouts using flexbox and grid are unaffected.
Should I minify HTML if I already gzip my responses?
Yes. Gzip compresses data at the network level, but minification removes unnecessary bytes from the source. Applying both gives you the best results since gzip compresses the already-smaller minified HTML even more efficiently.
Does it handle HTML embedded in PHP, ERB, or other template languages?
This tool works on pure HTML. Template language syntax (<?php ?>, <%= %>, {{ }}) may be treated as text content and preserved, but the minifier cannot optimize around template logic. Minify the HTML output after server-side rendering for best results.

Last updated: April 6, 2026