HTML Minifier | Compress & Optimize HTML

FormattingRuns in Your Browser (No Uploads)

HTML Code Minification: Strip whitespace and comments with HTML5-safe rules. Works with inline CSS/JS and reports bytes saved. All processing is local.

standard Label HTML5 — Supports semantic tags, inline CSS/JS, data attributes, ARIA, SVG, and modern browser features

💡 Live Mode: Results update automatically as you type.

Input

Original: 0 bytes

Output

minified: 0 bytes

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Minify HTML safely by removing whitespace, comments, and optional tags while preserving HTML5 semantics, ARIA attributes, and inline CSS/JS. Everything runs 100% client-side for privacy and speed.

How to Use This Tool

1
Paste or drop your HTML into the input.
2
Use Live mode for instant output or Manual mode to click Minify.
3
Review bytes saved and compression rate.
4
Copy or download the minified HTML and verify before release.

Use Cases & Examples

Production Builds

Ship smaller HTML to improve TTFB/LCP and reduce bandwidth.

Email Templates

Trim markup in HTML emails to reduce message size and clipping risk.

SPA Shells & SSR

Shrink the SSR/SPA shell so scripts hydrate faster and interactivity improves.

Static Sites & Docs

Publish compact static pages and docs while preserving semantics and accessibility.

How HTML Minification Works

Removes non-semantic characters (spaces, newlines, comments) and omits HTML5-optional tags where safe (e.g., </li>, </p>).

Protects significant whitespace within sensitive elements such as <pre>, <code>, <textarea>, and keeps ARIA/data-* attributes intact.

Pairs well with transport compression (Gzip/Brotli): minify first, then compress for maximal byte savings.

Frequently Asked Questions

Q.Will minifying HTML break my page?

A. Pages should render identically. However, if your layout relies on significant whitespace (e.g., inside <pre>, <code>, or templating blocks), test before release.

Q.Should I minify in development or only production?

A. Keep readable HTML during development and minify for production. This streamlines debugging and avoids noisy diffs.

Q.Does HTML minification affect SEO?

A. Minification does not change content or semantics, so it does not harm SEO. In fact, smaller HTML can improve Core Web Vitals by loading faster.

Q.What optimizations are applied?

A. Whitespace/comment removal, omission of HTML5-optional end/start tags where safe, and conservative attribute/value shortening (e.g., boolean attributes).

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