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How HTML Minifier works

  1. Paste your HTML snippet into the Input box.
  2. The Output panel updates instantly, with comments stripped and whitespace between tags collapsed.
  3. Check the result for any whitespace-sensitive sections, like <pre> blocks, that may have been affected.
  4. Click Copy to grab the compacted markup for your embed, template, or fragment.
  • Compact an HTML email template's markup before pasting it into an email service provider's editor.
  • Shrink a widget or embed snippet that will be inserted into a CMS with limited character allowances.
  • Strip development comments out of a static HTML fragment before a quick, one-off deployment.
  • Clean up whitespace in HTML copied from a design tool or WYSIWYG editor before sharing it.

Your HTML is minified entirely in your browser using local regular-expression processing — nothing is uploaded or sent to a server.

  • Collapsing whitespace between all tags can alter rendering inside whitespace-sensitive elements like <pre>, <textarea>, or formatted <code> blocks — review those sections after minifying.
  • It does not minify CSS inside <style> tags or JavaScript inside <script> tags, only the surrounding HTML markup.
  • It doesn't restructure markup (removing optional tags, shortening attributes) the way a full build-tool HTML minifier does — it only strips comments and collapses whitespace.

HTML Minifier

HTML Minifier compresses pasted HTML snippets for embeds, templates, and quick pages. It is designed for small snippets and local browser-only processing.

HTML Minifier Runs locally

HTML Minifier

Remove comments and extra whitespace from HTML snippets. Everything runs locally in this tab.

Output
<main><h1>Hello</h1></main>
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Guide

How to use

  1. Paste your HTML snippet into the Input box.

  2. The Output panel updates instantly, with comments stripped and whitespace between tags collapsed.

  3. Check the result for any whitespace-sensitive sections, like <pre> blocks, that may have been affected.

  4. Click Copy to grab the compacted markup for your embed, template, or fragment.

Scenarios

Use cases

  • Compact an HTML email template's markup before pasting it into an email service provider's editor.

  • Shrink a widget or embed snippet that will be inserted into a CMS with limited character allowances.

  • Strip development comments out of a static HTML fragment before a quick, one-off deployment.

  • Clean up whitespace in HTML copied from a design tool or WYSIWYG editor before sharing it.

Good to know

Limitations & Privacy

Private by design

Your HTML is minified entirely in your browser using local regular-expression processing — nothing is uploaded or sent to a server.

  • Collapsing whitespace between all tags can alter rendering inside whitespace-sensitive elements like <pre>, <textarea>, or formatted <code> blocks — review those sections after minifying.

  • It does not minify CSS inside <style> tags or JavaScript inside <script> tags, only the surrounding HTML markup.

  • It doesn't restructure markup (removing optional tags, shortening attributes) the way a full build-tool HTML minifier does — it only strips comments and collapses whitespace.

FAQ

Frequently asked questions

Is HTML Minifier free to use?

Yes. The tool is free and runs directly in your browser with no account required.

Does this tool upload my data?

No. Processing happens locally in the browser tab. Your input is not sent to a server.

What is this tool best for?

Compacting a small HTML snippet — an email template, a widget embed, or a static page fragment — before pasting it somewhere space-constrained.

What exactly does it remove?

It strips <!-- HTML comments -->, collapses whitespace between adjacent tags (> < becomes ><), and reduces runs of two or more spaces down to one.

Will it break whitespace-sensitive elements like <pre> or inline scripts?

It can. Because the minifier collapses whitespace between all tags indiscriminately, content inside <pre>, <textarea>, or formatted <code> blocks can lose meaningful spacing — review those sections after minifying.

Does it minify inline CSS and JavaScript inside <style> and <script> tags?

No. It only processes HTML markup and whitespace — CSS inside <style> tags and JS inside <script> tags pass through unchanged, aside from surrounding whitespace collapse.

Does it remove optional closing tags or attributes to shrink further?

No — this minifier only removes comments and collapses whitespace. It doesn't rewrite markup structure, drop optional tags, or shorten attribute syntax the way a build-tool HTML minifier does.

Is this safe for a full production page?

It's best suited to small snippets and embeds where you can visually verify the result. For a full page or build pipeline, a dedicated build-time HTML minifier gives more control and avoids surprises in whitespace-sensitive sections.