HTML Minifier — Reduce HTML File Size Online

Strip whitespace, comments, and redundant attributes from HTML to cut page weight and improve Core Web Vitals. Safe minification that preserves all tag functionality.

Key Features

Removes unnecessary whitespace between tags without breaking typography
Strips HTML comments while preserving conditional comments if needed
Removes redundant default attributes (such as type="text/javascript")
Calculates byte size reduction and percentage saved

How to Use

Paste your HTML document or template snippet into the input box.
Configure options such as stripping comments or collapsing whitespace.
Click "Minify HTML" to run the compression.
Check the calculated reduction statistics.
Copy the minified output for use in production.

Example

Sample input

<!DOCTYPE html>
<html>
  <body>
    <p>Hi</p>
  </body>
</html>

Sample output

<!DOCTYPE html><html><body><p>Hi</p></body></html>

Edge Cases

HTML comments (removed or kept per settings)
Whitespace inside <pre> tags
Conditional comments for legacy IE

Frequently Asked Questions

Does minifying HTML affect SEO or web rendering?

No, browsers render minified HTML identically to indented HTML. In fact, reducing document weight can improve Core Web Vitals and load speeds, which positively influences SEO.

Are comments inside JavaScript blocks removed?

Standard HTML comments () are stripped. Inline script tags are compressed while preserving syntax integrity.

Will minifying collapse essential spaces between inline tags?

The minifier preserves single spaces between inline elements like links, spans, and bold tags so text does not run together.

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Privacy notice: when you run this tool, your input is sent over HTTPS to our server, processed in memory and returned. It is not stored or logged. Avoid pasting live secrets such as private keys or passwords.