HTML Comments

Comment tags <!-- and --> are used to insert comments in HTML.

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HTML Comment Tags

You can add comments to your HTML source by using the following syntax:

<!-- Write your comments here -->

	Note: There is an exclamation point (!) in the opening tag, but not in the closing tag.

Comments are not displayed by the browser, but they can help document your HTML.
With comments you can place notifications and reminders in your HTML:

Example

<!-- This is a comment -->

<p>This is a paragraph.</p>

<!-- Remember to add more information here -->

Comments are also great for debugging HTML, because you can comment out HTML lines of code, one at a time, to search for errors:

Example

<!-- Do not display this at the moment
<img border="0" src="/images/pulpit.jpg" alt="Pulpit rock" width="304" height="228">
-->

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Software Program Tags

HTML comments tags can also be generated by various HTML software programs.
For example the <!--webbot bot--> tags which are wrapped inside HTML comments by FrontPage.
As a rule, let these tags stay, to help support the software.

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Conditional Comments

Only Internet Explorer recognizes conditional comments.
Conditional comments enable you to add a browser specific code that executes only if the browser is IE but is treated as a comment by other browsers.
You can add conditional comments to your HTML document by using the following syntax:

Example

<!--[if IE 5]>This is IE 5<br><![endif]-->
<!--[if IE 6]>This is IE 6<br><![endif]-->
<!--[if IE 7]>This is IE 7<br><![endif]-->
<!--[if IE 8]>This is IE 8<br><![endif]-->
<!--[if IE 9]>This is IE 9<br><![endif]-->