HTML Comments
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Expert Answer & Key Takeaways
Mastering HTML Comments is essential for high-fidelity technical architecture and senior engineering roles in 2026.
HTML Comments
HTML comments are not displayed in the browser, but they can help document your HTML source code.
<!-- This is a comment -->
<p>This is a paragraph.</p>
<!-- Remember to add more information here -->HTML Comment Tags
You can add comments to your HTML source by using the following syntax:
<!-- Write your comments here -->Notice that there is an exclamation point (
!) in the start tag, but not in the end tag.Note: Comments are not displayed by the browser, but they can help document your HTML source code. With comments you can place notifications and reminders in your HTML.
Hide Content
Comments can be used to hide content. This can be helpful if you want to hide content temporarily:
<!--
<p>This is a long paragraph that I want to hide for now.</p>
<img border="0" src="pic_trulli.jpg" alt="Trulli">
-->You can also hide more than one line. Everything between the
<!-- and the --> will be hidden from the display.Hide Inline Content
Comments can also be used to hide parts of an HTML code in the middle of a line:
<p>This <!-- is a extra text --> is a paragraph.</p>💡 Interactive Task
Try hiding one of your existing paragraphs using comments. Verify that it disappears from the browser but remains in your source code. This is exactly how developers debug broken layouts!
Interview Corner
❓ Interview Question
Q: Are HTML comments visible to the user?
A: No, HTML comments are not rendered by the browser on the webpage. However, they are visible to anyone who uses the 'View Page Source' feature in their browser.
❓ Interview Question
Q: Can I hide a whole section of my website using comments?
A: Yes, you can wrap any amount of HTML code between the
<!-- and --> markers to hide it from the browser. This is very useful for debugging or temporarily removing features.❓ Interview Question
Q: Can I use
// or /* */ for comments in HTML?A: No. Those are for JavaScript and CSS. If you use them in HTML, they will be rendered as plain text on your webpage.
Course4All Engineering Team
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Focused on accessibility, semantic structure, and modern SEO, our frontend team ensures the HTML/CSS curriculum meets 2026 professional standards.
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