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HTML Minifier

Strip whitespace and comments from HTML. Useful for embed code, email templates, or production HTML.

How to use this tool

  1. 1

    Paste your HTML — a fragment, a component, or a small template.

  2. 2

    The minified result and the new byte count appear instantly below.

  3. 3

    Copy the minified HTML for your embed, email, or snippet.

What HTML minification does — and where to use it carefully

HTML minification removes characters a browser doesn't need to build the page: comments and the whitespace between tags. The parsed result — the DOM the browser actually constructs from ordinary markup — is identical; only the byte count drops. For a typical hand-written page the raw saving is modest (often 10–20%) because HTML already compresses well with gzip and Brotli, but minification still helps where markup ships on every single load: a server-rendered fragment returned by an API on each request, an email template duplicated across thousands of sends, or an embed snippet pasted onto other people's sites. This tool is a lightweight minifier: it strips HTML comments and collapses runs of whitespace, which is perfect for simple, self-contained snippets. It is intentionally not whitespace-aware, so it should be used carefully on documents that contain whitespace-sensitive regions — anything inside <pre>, <code>, or <textarea>, content styled with 'white-space: pre', or inline <script> where line breaks matter — because collapsing the spacing there can change what renders or how code behaves. For minifying whole production pages, let a build-time tool like html-minifier-terser handle it; it understands those special elements and preserves them. Reach for this on-demand minifier when there's no build step in the loop and your snippet is plain markup.

Common use cases

  • Compress a simple HTML email template, where size affects deliverability and there's no build pipeline.

  • Minify a plain embed or widget snippet that gets pasted onto many external pages.

  • Trim server-rendered HTML fragments returned by an API or AJAX endpoint on every request.

  • Remove developer comments from markup before it's exposed in a public 'View Source'.

  • Shrink a small static HTML file you're hosting directly without a bundler.

  • Quickly see how much weight comments and whitespace add to a chunk of markup.

Frequently asked questions

Will minification break my layout?
It can, if your HTML contains whitespace-sensitive parts. This is a simple minifier that collapses whitespace everywhere, including inside <pre>, <code>, <textarea>, and any element with 'white-space: pre' — where spaces and line breaks are meaningful. Avoid it on markup containing those, or use a build tool like html-minifier-terser that preserves them. On plain markup it's safe.
Does it minify inline CSS and JavaScript?
It collapses whitespace in the markup, which can also affect the text inside <style> and <script>. Inline JavaScript that relies on line breaks (or has line comments) can break, so keep significant scripts out of what you minify here, and run CSS and JS through their own dedicated minifiers instead.
Is minification worth it if I already gzip?
The gain is smaller than with CSS or JS because HTML is repetitive and compresses well, but the two still stack, and minification additionally removes comments and shrinks the markup the browser must parse. For high-traffic or per-request HTML it's worth automating; for a one-off page it's marginal.
Should I commit minified HTML to my source?
No — keep your source readable and minify as a build or deploy step. Minified HTML is hard to edit and review; treat it as a build artifact, not the file you maintain.
What exactly does this tool remove?
HTML comments (<!-- ... -->) and redundant whitespace — the gaps between tags and runs of multiple spaces collapse to one. It does not strip attributes, rewrite tags, or remove optional closing tags, so the output stays a faithful, predictable version of your input.
Is my HTML uploaded?
No — minification happens in your browser, so private templates and internal markup never leave your machine.

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