HTML Tags

The most important tags in HTML are tags that define headings, paragraphs and line breaks.

The best way to learn HTML is to work with examples. We have created a very nice HTML editor for you. With this editor, you can edit the HTML source code if you like, and click on a test button to view the result.

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Try it Yourself - Examples
A very simple HTML document
This example is a very simple HTML document, with only a minimum of HTML tags. It demonstrates how the text inside a body element is displayed in the browser.

Simple paragraphs
This example demonstrates how the text inside paragraph elements is displayed in the browser.

(You can find more examples at the bottom of this page)

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Headings
Headings are defined with the <h1> to <h6> tags. <h1> defines the largest heading. <h6> defines the smallest heading.

<h1> This is a heading <h1>

This is a heading

<h2> This is a heading <h2>

This is a heading

<h3> This is a heading <h3>

This is a heading

<h4> This is a heading <h4>

This is a heading

<h5> This is a heading <h5>

This is a heading

<h6> This is a heading <h6>

This is a heading

HTML automatically adds an extra blank line before and after a heading.


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Paragraphs
Paragraphs are defined with the <p> This is a heading <h1> tag.
<p> This is a paragraph <p>

This is a paragraph

<p> This is another paragraph <p>

This is another paragraph

HTML automatically adds an extra blank line before and after a paragraph.

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Don't Forget the Closing Tag
You might have noticed that paragraphs can be written without end tags

:

<p> This is a paragraph
<p> This is another paragraph

The example above will work in most browsers, but don't rely on it. Future version of HTML will not allow you to skip ANY end tags.

Closing all HTML elements with an end tag is a future proof way of writing HTML. It also makes the code easier to understand (read and browse) when you to mark both where an element starts and where it ends.

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Line Breaks
The <br> tag is used when you want to break a line, but don't want to start a new paragraph. The <br> tag forces a line break wherever you place it.

<p>This <br>is a para<br>graph with line breaks<<p>

Try it yourself

The <br> tag is an empty tag. It has no end tag like <br>, since a closing tag doesn't make any sense.

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<br> or <br/>
More and more often you will see the <br> tag written like this: <br/>

Because the <br> tag has no end tag (or closing tag), it breaks one of the rules for future HTML (the XML based XHTML), namely that all elements must be closed.

Writing it like <br/> is a future proof way of closing (or ending) the tag inside the opening tag, accepted by both HTML and XML.

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Comments in HTML
The comment tag is used to insert a comment in the HTML source code. A comment will be ignored by the browser. You can use comments to explain your code, which can help you when you edit the source code at a later date.
<!-- This is a comment -->


Note that you need an exclamation point after the opening bracket, but not before the closing bracket.

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Recap on HTML Elements
Each HTML element has an element name (body, h1, p, br)
The start tag is the name surrounded by angle brackets: <hr>
The end tag is a slash and the name surrounded by angle brackets </hr>
The element content occurs between the start tag and the end tag
Some HTML elements have no content
Some HTML elements have no end tag

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Basic Notes - Useful Tips
When you write HTML text, you can never be sure how the text is displayed in another browser. Some people have large computer displays, some have small. The text will be reformatted every time the user resizes his window. Never try to format the text in your editor by adding empty lines and spaces to the text.

HTML will truncate the spaces in your text. Any number of spaces count as one. Some extra information: In HTML a new line counts as one space.

Using empty paragraphs <p> to insert blank lines is a bad habit. Use the <br> tag instead. (But don't use the <br> tag to create lists. Wait until you have learned about HTML lists.)

HTML automatically adds an extra blank line before and after some elements, like before and after a paragraph, and before and after a heading.

We use a horizontal rule (the <hr> tag), to separate the sections in our tutorials.

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More Examples
More paragraphs
This example demonstrates some of the default behaviors of paragraph elements.

Line breaks
This example demonstrates the use of line breaks in an HTML document.

Poem problems
This example demonstrates some problems with HTML formatting.

Headings
This example demonstrates the tags that display headings in an HTML document.

Horizontal rule
This example demonstrates how to insert a horizontal rule.

Hidden comments
This example demonstrates how to insert a hidden comment in the HTML source code.

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Basic HTML Tags
If you lookup the basic HTML tags in the reference below, you will see that the reference contains additional information about tag attributes.

You will learn more about HTML tag attributes in the next chapter of this tutorial.

Tag Description
<html> Defines an HTML document
<body> Defines the document's body
<h1> to <h6> Defines header 1 to header 6
<p>Defines a paragraph
<br>Inserts a single line break
<hr>Defines a horizontal rule
<!--> Defines a comment