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Guide

How to use this tool, examples, and related tips.

How to Use the HTML Minifier

Paste your formatted HTML into the input field.

The tool removes non-significant whitespace, comments, and optional closing tags to produce a smaller document.

Copy the minified HTML for use in your production build or deployment pipeline.

What Is HTML Minification?

HTML minification removes characters from an HTML document that are not required for correct rendering — whitespace between tags, HTML comments, and in some cases optional closing tags and redundant attribute quotes. The resulting document is functionally identical but smaller in size, reducing the amount of data transferred to the browser on each page load. For large HTML documents or high-traffic pages, minification contributes to faster time-to-first-byte and improved Core Web Vitals scores. Most production build pipelines minify HTML automatically, but this tool lets you do it manually for individual files or snippets.

When to Use This Tool

Optimizing static HTML files — Minify HTML pages that aren't processed by a build pipeline before deploying them to a CDN or static host.

Reducing email template size — Minify HTML email templates to reduce message size and improve deliverability.

Inspecting minified output — Verify what a build tool's minifier produces before deploying to production.

Comparing pre- and post-minification size — Quickly assess how much size reduction HTML minification achieves for a given document.

Related Tools

  • HTML formatter
  • HTML validator
  • CSS minifier
  • JavaScript minifier
  • XML minifier

FAQ

Answers about this tool and how your data is handled.

Does minifying HTML break the page?

For standard HTML, no. Whitespace between block elements is non-significant and safe to remove. Whitespace between inline elements can occasionally affect visual rendering — check the output if your layout relies on text-level spacing.

Are HTML comments removed?

Yes. HTML comments are stripped during minification. If you use conditional comments for IE compatibility, check whether they are preserved.

Does this tool send my data to a server?

No. Minification runs entirely in your browser. Nothing is uploaded.

How do I get back to readable HTML after minifying?

Paste the minified output into the HTML formatter to restore indentation.

Is inline CSS and JavaScript also minified?

This depends on the tool's implementation. Check the output — some HTML minifiers also collapse inline <style> and <script> content.

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