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HTML5 Tags
<!--><!DOCTYPE>
<a>
<abbr>
<acronym>
<address>
<applet>
<area>
<article>
<aside>
<audio>
<b>
<base>
<basefont>
<bdi>
<bdo>
<big>
<blockquote>
<body>
<br>
<button>
<canvas>
<caption>
<center>
<cite>
<code>
<col>
<colgroup>
<command>
<datalist>
<dd>
<del>
<details>
<dfn>
<dir>
<div>
<dl>
<dt>
<em>
<embed>
<fieldset>
<figcaption>
<figure>
<font>
<footer>
<form>
<frame>
<frameset>
<h1> - <h6>
<head>
<header>
<hgroup>
<hr>
<html>
<i>
<iframe>
<img>
<input>
<ins>
<keygen>
<kbd>
<label>
<legend>
<li>
<link>
<map>
<mark>
<menu>
<meta>
<meter>
<nav>
<noframes>
<noscript>
<object>
<ol>
<optgroup>
<option>
<output>
<p>
<param>
<pre>
<progress>
<q>
<rp>
<rt>
<ruby>
<s>
<samp>
<script>
<section>
<select>
<small>
<source>
<span>
<strike>
<strong>
<style>
<sub>
<summary>
<sup>
<table>
<tbody>
<td>
<textarea>
<tfoot>
<th>
<thead>
<time>
<title>
<tr>
<track>
<tt>
<u>
<ul>
<var>
<video>
<wbr>
HTML5 <!DOCTYPE> Declaration
Example
The <!DOCTYPE> declaration for HTML5:
<html>
<head>
<title>Title of the document</title>
</head>
<body>
The content of the document......
</body>
</html>
Try it yourself »
Browser Support
The <!DOCTYPE> declaration is supported in all major browsers.
Definition and Usage
The <!DOCTYPE> declaration must be the very first thing in your HTML5 document, before the <html> tag.
The <!DOCTYPE> declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in.
In HTML 4.01, all <!DOCTYPE> declarations require a reference to a DTD, because HTML 4.01 was based on SGML.
HTML5 is not based on SGML, and therefore does not require a reference to a DTD.
Tip: Always add the <!DOCTYPE> declaration to your HTML documents, so that the browser knows what type of document to expect.
Differences Between HTML 4.01 and HTML5
There are three different <!DOCTYPE> declarations in HTML 4.01. In HTML5 there is only one:
Tips and Notes
Note: The <!DOCTYPE> tag does not have an end tag.
Tip: The <!DOCTYPE> declaration is NOT case sensitive.
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