HTML Minifier

About this tool

Shrink HTML by removing comments and collapsing extra whitespace between tags, reducing the file size sent to browsers.

Example

Input: <!-- c --><p> Hi </p>

Output: <p> Hi </p>

Privacy

This tool runs entirely in your browser. Your data is processed locally and never uploaded to a server.

How to use this tool

1. Paste your HTML into the input box.
2. Check that the markup is valid and that any comments you want to keep are already removed.
3. Run the minifier to compress the HTML.
4. Copy the minified output and use it in your page or build step.

Step by step, what happens

1. The tool reads your HTML as plain text and scans for comment blocks and extra whitespace between tags.
2. It removes HTML comments so they do not get sent to the browser.
3. It collapses unnecessary whitespace where it can do so without changing the structure of the document.
4. It returns a shorter HTML string that is easier to send over the network.

Worked example

Here is a small page snippet with a comment and extra spacing between tags.

Input: <div> <!-- note --> <span>Hi</span> </div>

1. The tool removes the HTML comment because comments are not needed for the final page output.
2. It collapses the extra whitespace and newlines between the tags.
3. The visible content stays the same, but the markup becomes shorter.

Tips and common mistakes

• Do not rely on comments for anything the browser must keep, because the minifier removes them.
• Check your HTML before minifying if you have inline scripts or styles, since whitespace changes can matter in some cases.
• Keep the original formatted HTML in source control, and use the minified version for delivery.
• If your page depends on intentional spacing in text nodes, verify the result carefully after minifying.

Frequently asked questions