Understanding each HTML tag is a crucial step to implementing your own HTML code.
Use this guide as a reference for standard HTML tags and how to use them.
What are HTML Tags?
HTML tags are simple instructions that tell a web browser how to format text. You can use tags to format italics, line breaks, objects, bullet points, and more.
These tags live in the HTML (or the Hypertext Markup Language) of every webpage. Put, HTML is the language of web pages.
How Do Web Pages Read HTML Tags?
Servers read HTML code to understand and render content. It will read the HTML from top to bottom, much like how you’re reading this guide.
You can use as many or as few tags as you like to format content. However, there are a few essential HTML tags and rules you’ll need to follow.
An HTML tag must contain three parts:
An opening tag — this will start with a < > symbol Content — the short instructions on how to display the on-page element A closing tag — this will end with a </ > symbolHowever, some HTML tags can be unclosed. That means that the HTML tag does not need to be closed with a </ >. You’ll typically use unclosed tags for metadata or line breaks.
What’s the Difference Between Attributes and HTML Tags?
Although this guide is all about HTML tags, it’s important to know the difference between HTML tags, elements, and attributes.
An HTML element is an item on the page; it’s part of the web page’s content. An HTML tag affects how an HTML element appears. An HTML attribute describes the characteristics of that element.
Here’s a breakdown of how elements, tags, and attributes work together:
HTML tags contain instructions on how to display an on-page element. They begin with a < and end with a > and precede and follow the content of the element. (e.g <b> Bold Tag </b>) HTML Elements are the on-page content sandwiched within the tags. (<b> Bold Tag </b>) HTML Attributes provide additional information about HTML elements and appear at within the HTML tag (e.g. <html lang="en-US">).Type
HTML Tags
HTML Elements
HTML Attributes
Contains
Instructions on how to display an on-page element
The on-page content to be displayed
Additional information about the on-page elements
Appearance
It starts with < and ends with >
Sandwiched within an HTML tag
Appear in the starting tag before any elements
Examples Of HTML Tags
<p> Paragraph Tag </p>
The <p> and </p> are the HTML tags and “Paragraph Tag” is the HTML element, i.e. the on-page text.
This tag formats any text between the opening <p> tag and the closing </p> tag as a standard paragraph or main body text.
<h2> Heading Tag </h2>
In this example, <h2> and </h2> are the HTML tags and “Heading Tag” is the HTML element, i.e. the on-page heading.
Using this tag will format any text between the opening <h2> tag and the closing </h2> tag as a Heading 2 (a type of subheading.)
<b> Bold Tag </b>
Here the <b> and </b> are the HTML tags and “Bold Tag” is the HTML element, i.e. the on page text.
This tag will format any text between the opening <b> tag and the closing </b> tag as bold.
<i> Italic Tag </i>
Here, the <i> and </i> are the HTML tags and “Italic Tag” is the HTML element (the on-page text.)
This tag will format any text between the opening <i> tag and the closing </i> tag as italic.
<u> Underline Tag</u>
Here the <u> and </u> are the HTML tags and “Underline Tag” is the HTML element, i.e. the on page text.
This tag will format any text between the opening <u> tag and the closing </u> tag as underlined.
The Most Common HTML Tags
There are nearly 100 different types of HTML tags that you can use for your web pages. Here is a list of the most common HTML tags:
Tag
Type
What It Is
<p>
HTML Text Tags
Paragraph
<h1>
HTML Text Tags
Heading 1
<h2>
HTML Text Tags
Heading 2
<h3>
HTML Text Tags
Heading 3
<h4>
HTML Text Tags
Heading 4
<h5>
HTML Text Tags
Heading 5
<h6>
HTML Text Tags
Heading 6
<strong>
HTML Text Tags
Strong
<em>
HTML Text Tags
Emphasis
<abbr>
HTML Text Tags
Abbreviation
<address>
HTML Text Tags
Contact Information
<bdo>
HTML Text Tags
Override The Current Text Direction
<blockquote>
HTML Text Tags
Content From Another Source
<cite>
HTML Text Tags
Title Of The Work, Book, Website
<q>
HTML Text Tags
Inline Quotation
<code>
HTML Text Tags
Display A Part Of Programming Code
<ins>
HTML Text Tags
Text Inserted
<del>
HTML Text Tags
Text Deleted From The Document
<dfn>
HTML Text Tags
Term Defined Within A Sentence/Phrase
<kbd>
HTML Text Tags
Keyboard Input
<pre>
HTML Text Tags
Preformatted Text
<samp>
HTML Text Tags
Sample Output Of A Computer Program
<var>
HTML Text Tags
Variable Name Used In Mathematical Or Programming Context
<br>
HTML Text Tags
Single Line Break
<div>
HTML Text Tags
Division
<a>
HTML Link Tags
Anchor Tag For A Link
<base>
HTML Link Tags
Base Url For All Relative Url Within The Document
<img>
HTML Image And Object Tags
Image
<area>
HTML Image And Object Tags
Area Of An Image Map
<map>
HTML Image And Object Tags
Image Map
<param>
HTML Image And Object Tags
Parameter For An <Object> Element
<object>
HTML Image And Object Tags
Embed An Object
<ul>
HTML List Tags
Unordered List
<ol>
HTML List Tags
Ordered List
<li>
HTML List Tags
List
<dl>
HTML List Tags
Description List
<dt>
HTML List Tags
Term In Description List
<dd>
HTML List Tags
Definition/Description Of A Term In Description List
For a full list of all 100+ HTML elements, visit this helpful guide from javaTpoint.
How to Check Your Site’s HTML Tags
If you already have HTML tags on your web pages and want to check if they’re used correctly, you can do so by looking at the HTML of your page. To do this, all you need is your web browser.
To view your webpage’s HTML, you should:
Right-click while on your webpage in Google Chrome Click ‘Inspect’ You'll see the HTML code in a box at the side or bottom of your page Use Ctrl + F to find particular tags or elementsTo check if your website uses HTML tags correctly, you can do an SEO audit of your site. Third-party tools like the Site Audit tool can check if the basic HTML tags and attributes are correct and if your pages use too much HTML.
To perform an SEO audit with the Site Audit tool, you’ll need to create a project for your domain first. If you already have a project, select the “Site Audit” option from your project dashboard:
The tool will prompt you to enter your target domain and configure any additional settings:
Use the tool settings to set the crawl scope, disallow URLs, or provide additional website access. Select “Start Site Audit.” The tool will notify you when the audit is complete.
Upon completion, you’ll be directed to the Site Audit overview report, where you’ll have a high-level view of any site issue:
Select the “Issues” tab for a more detailed view of any HTML issues. The tool also provides suggestions on how to fix each issue:
Final Thoughts
Understanding HTML doesn't have to be complicated. With the cheat sheet in this guide, you should identify and implement HTML tags for your web pages.
Need more details on HTML attributes and how to fix them? Try our guide to HTML Attributes.
For more information about doing a site audit and checking your site’s HTML, check out our guide to doing a full SEO audit in 18 steps.
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