HTML5
Document Summary
<!DOCTYPE html> <!-- Tells the browser that HTML5 version of HTML to be recognized by the browser -->
<html lang="en"></html> <!-- The HTML lang attribute is used to identify the language of text content on the web. This information helps search engines return language specific results, -->
<head></head> <!-- Contains Information specific to the page like title, styles and scripts -->
<title></title> <!-- Title for the page that shows up in the browser title bar -->
<body></body> <!-- Content that the user will see -->
Document Information
<base/> <!-- Usefull for specifying relative links in a document -->
<style></style> <!-- Contains styles for the html document -->
<meta/> <!-- Contains additional information about the page, author, page description and other hidden page info -->
<script></script> <!-- Contains all scripts internal or external -->
<link/> <!-- Used to create relationships with external pages and stylesheets -->
Document Structure
<h1></h1> ... <h6></h6> <!-- All six levels of heading with 1 being the most promiment and 6 being the least prominent -->
<p></p> <!-- Used to organize paragraph text -->
<div></div> <!-- A generic container used to denote a page section -->
<span></span> <!-- Inline section or block container used for creating inline style elements -->
<br/> <!-- Creates a line-break -->
<hr> <!-- Creates a sectional break into HTML -->
Text Formatting
<strong></strong> and <b></b> <!-- Makes text contained in the tag as bold -->
<em></em> and <i></i> <!-- Alternative way to make the text contained in the tag as italic -->
<strike></strike> <!-- Creates a strike through the text element -->
<pre></pre> <!-- Preformatted monospace text block with some spacing intact -->
<blockquote></blockquote> <!-- Contains long paragraphs of quotations often cited -->
<abbr></abbr> <!-- Contains abbreviations while also making the full form avaialable -->
<address></address> <!-- Used to display contact information -->
<code></code> <!-- Used to display inline code snippets -->
<q></q> <!-- Defines a short inline quotation -->
<sub></sub> <!-- Defines subscripted text -->
<sup></sup> <!-- Defines superscripted text -->
<kbd></kbd> <!-- Specifies text as keyboard input -->
<small></small> <!-- Specifies small text -->
Links Formatting
<a href="url"></a> <!-- Used to link to external or internal pages of a wbesite -->
<a href="mailto:email@example.com"></a> <!-- Used to link to an email address -->
<a href="name"></a> <!-- Used to link to a document element -->
<a href="#name"></a> <!-- Used to link to specific div element -->
<a href="tel://####-####-##"></a> <!-- Used to display phone numbers and make them clickable -->
Image Formatting
<img src="url" alt="text"> <!-- Used to display images in a webpage where src="url" contains the link to the image source and alt="" contains an alternative text to display when the image is not displayed -->
List Formatting
<ol></ol> <!-- Used to create ordered lists with numbers in the items -->
<ul></ul> <!-- Used to display unordered lists with numbers in the items -->
<li></li> <!-- Contains list items inside ordered and unordered lists -->
<dl></dl> <!-- Contains list item definitions -->
<dt></dt> <!-- Definition of single term inline with body content -->
<dd></dd> <!-- The descrpition of the defined term -->
Forms Formatting and Attributes
<form action="url"></form> <!-- Form element creates a form and action="" specifies where the data is to be sent to when the visitor submits the form -->
<!-- Supported attributes -->
method="somefunction()" <!-- Contains the type of request (GET, POST... etc) which dictates how to send the data of the form -->
enctype="" <!-- Dictates how the data is to be encoded when the data is sent to the web server. -->
autocomplete="" <!-- Specifies if the autocomplete functionality is enabled or not -->
novalidate <!-- Dictates if the form will be validated or not -->
accept-charset="" <!-- Identifies the character encoding upon form submission -->
target="" <!-- Tell where to display the information upon form submission. Possible values: '_blank', '_self', '_parent', '_top' -->
<fieldset disabled="disabled"></fieldset> <!-- Identifies the group of all fields in the form -->
<label for=""></label> <!-- A simple field label telling the user what to type in the field -->
<legend></legend> <!-- The form legend acts as a caption for the fieldset element -->
<input type="text/email/number/color/date"> <!-- Input is the input field where the user can input various types of data -->
<!-- Supported attributes -->
name="" <!-- Describes the name of the form -->
width="" <!-- Specifies the width of an input field -->
value="" <!-- Describes the value of the input information field -->
size="" <!-- Specifies the input element width in characters -->
maxlength="" <!-- Specifies the maximum input character numbers -->
required="" <!-- Specifies if the input field is required to fill in before submitting the form -->
step="" <!-- Identifies the legal number intervals of the input field -->
<textarea name="" id="" cols="30" rows="10"> <!-- Specifies a large input text field for longer messages -->
</textarea>
<select name=""></select> <!-- Describes a dropdown box for users to select from variety of choices -->
<!-- Supported attributes -->
name="" <!-- The name for a dropdown combination box -->
size="" <!-- Specifies the number of available options -->
multiple <!-- Allows for multiple option selections -->
required <!-- Requires that a value is selected before submitting the form -->
autofocus <!-- Specifies that the dropdown automatically comes to focus once the page loads -->
<optgroup></optgroup> <!-- Specifies the entire grouping of available options -->
<option value=""></option> <!-- Defines one of the avaialble option from the dropdown list -->
<button></button> <!-- A clickable button to submit the form -->
Tables Formatting
<table></table> <!-- Defines and contains all table related content -->
<caption></caption> <!-- A description of what table is and what it contains -->
<thead></thead> <!-- The table headers contain the type of information defined in each column underneath -->
<tbody></tbody> <!-- Contains the tables data or information -->
<tfoot></tfoot> <!-- Defines table footer -->
<tr></tr> <!-- Contains the information to be included in a table row -->
<th></th> <!-- Contains the information to be included in a single table header -->
<td></td> <!-- Contains actual information in a table cell -->
<colgroup></colgroup> <!-- Groups a single or multiple columns for formatting purposes -->
<col> <!-- Defines a single column of information inside a table -->
## Objects and iFrames
```html
<object data=""></object> <!-- Describes and embed file type including audio, video, PDF's, images -->
<!-- Supported attributes -->
type="" <!-- Describes the type of media embedded -->
height="" <!-- Describes the height of the object in pixels -->
width="" <!-- Describes the width of the object in pixels -->
usemap="" <!-- This is the name of the client-side image map in the object -->
<iframe src="" frameborder="0"></iframe> <!-- Contains an inline frame that allows to embed external information -->
<embed src="" type=""> <!-- Acts as a container for external application or plug-in -->
src="" <!-- The source of the external file you're embedding -->
width="" <!-- Describes the width of the iframe in pixels -->
HTML5 New Tags
<header></header> <!-- Defines the header block for a document or a section -->
<footer></footer> <!-- Defines the footer block for a document or a section -->
<main></main> <!-- Describes the main content of a document -->
<article></article> <!-- Identifies an article inside a document -->
<aside></aside> <!-- Specifies content contained in a document sidebar -->
<section></section> <!-- Defines a section of a document -->
<details></details> <!-- Describes additonal information that user can view or hide -->
<dialog></dialog> <!-- A dialog box or a window -->
<figure></figure> <!-- An independent content block featuring images, diagrams or illustrations -->
<figcaption></figcaption> <!-- Caption that describe a figure -->
<mark></mark> <!-- Displays a portion of highlighted text with in a page content -->
<nav></nav> <!-- Navigation links for the user in a document -->
<menuitem></menuitem> <!-- The specific menu item that a user can raise from a pop up menu -->
<meter></meter> <!-- Describes the scalar measurement with in a known array -->
<progress></progress> <!-- Displays the progress of a task usually a progress bar -->
<rp></rp> <!-- Describes text within the browsers that do not support ruby notations -->
<rt></rt> <!-- Displays east asian typography character details -->
<ruby></ruby> <!-- Describes annotations for east asian typography -->
<summary></summary> <!-- Contains a visible heading for details element -->
<bdi></bdi> <!-- Helps you format parts of text in a different direction than other text -->
<time></time> <!-- Identifies the time and date -->
<wbr> <!-- A line break within the content -->
<!-- Some other useful tags -->
<canvas></canvas> <!-- Allows to draw 2D shapes on the web page with the help of javascript -->
<keygen> <!-- Represents a control for generating a public-private key pair -->
<map></map> <!-- Specifies an image map -->
Collective Character Obejcts
" " Quotation Marks - "
& & Ampersand - &
< < Less than sign - <
> > Greater than sign - >
  Non-breaking space
© © Copyright Symbol - ©
@ Ü @ symbol - @
• ö Small bullet - .
™ û Trademark Symbol - ™