HTML Elements and Attributes

Element/Attribute(s)		Description	Version
a		For creating links and anchors
	href	For specifying the URL of a page or the name of an anchor that a link goes to
	hreflang	For specifying the language of the linked resource	5
	media	For describing the media for which the target document was defined	5
	rel	For identifying the nature of the link
	target	For specifying the window or iframe where a link should open	*
	type	For noting a resource's MIME type
abbr		For explaining the meaning of abbreviations and acronyms	*
address		For identifying contact information for the nearest article or body element ancestor
area		For specifying the coordinates of image maps
	accesskey	For adding a keyboard shortcut to a particular region of the map
	alt	For giving information about an area
	coords	For giving the coordinates of an area in an image map
	href	For specifying the destination URL of a link in an area of an image map
	hreflang	For specifying the language of the linked resource	5
	media	For describing the media for which the target document was defined	5
	rel	For identifying the kind of link
	shape	For specifying the shape of an area in an image map
	target	For specifying the window or iframe where a link should open	*
article		For identifying a self-contained composition in a page that is in principle independently distributable or reusable	5
aside		For identifying a section of a page that consists of content that is tangentially related to the content around it	5
audio		For embedding sound or audio in a page	5
	autoplay	For telling the browser to start playing the audio file as soon as it can	5
	controls	For telling the browser to provide controls for the audio element	5
	crossorigin	For setting cross-origin request credentials	5
	loop	For telling the audio file to start over without interruption upon reaching its end	5
	mediagroup	For associating multiple media files together	5
	muted	For controlling the default state of audio output	5
	preload	For specifying whether the browser can begin downloading the audio file before the visitor starts playing it	5
	src	For identifying the URL of the audio file to play	5
b		For identifying a span of text to which attention is being drawn for utilitarian purposes, without conveying any extra importance and with no implication of an alternate voice or mood	*
base		For specifying the base URL of the page
	href	For specifying the URL to be used to generate relative URLs
	target	For specifying the default target for the links on the page	*
bdi		For identifying a span of text that is to be isolated from its surroundings for the purposes of bidirectional text formatting	5
	dir	For specifying text direction	5
bdo		For explicitly formatting the text direction of its content
	dir	For specifying text direction
blockquote		For identifying a section quoted from another source
	cite	For giving the URL of the source
body		For enclosing the main content area of a page
br		For creating a line break
button		For creating buttons
	autofocus	For specifying that the button is to be focused as soon as the page is loaded	5
	disabled	For indicating that the element is not available in the current state
	form	For associating the element with a form that it is not a part of	5
	formaction	For overriding the form's action attribute	5
	formenctype	For overriding the form's enctype attribute	5
	formmethod	For overriding the form's method attribute	5
	formnovalidate	For overriding the form's novalidate attribute	5
	formtarget	For overriding the form's target attribute	5
	name	For identifying the data sent with a button, or for identifying the button itself (perhaps for a JavaScript function)
	type	For using the button in a form element
	value	For specifying the data that should be submitted when the button is clicked
canvas		To provide scripts with a resolution-dependent bitmap canvas for rendering graphics on the fly	5
	width, height	For specifying the size of the canvas	5
caption		For creating a caption for a table
cite		For marking text as a citation
code		For marking text as computer code
col		For joining columns in a table into a non-structural group
	span	For specifying the number of columns in a column group
colgroup		For joining columns in a table into a structural column group
	span	For specifying the number of columns in a column group
command		For representing a command the user can invoke, such as defining a keyboard command	5
	checked	For indicating the checked state of the command (if the command type is "checkbox" or "radio")	5
	disabled	For indicating that the command is not available in the current state	5
	icon	For providing an image that represents the command	5
	label	For showing the name of the command to the user	5
	radiogroup	For identifying the radio buttons that will be toggled when the command is toggled (if the command type is "radio")	5
	type	For indicating the type of command	5
datalist		To contain a group of option elements that represent a predefined set of options for another form control	5
dd		For marking a definition in a list
details		For creating a disclosure widget from which the visitor can obtain additional information or controls	5
	open	For specifying whether the element is open or closed by default	5
del		To mark deleted text
	cite	For referencing a URL that explains the change
	datetime	For specifying the time and date of the change
dfn		For specifying the defining instance of a term
	title	For providing the definition of the term
div		For dividing a page into block-level sections
dl		For creating a definition list
dt		For marking a term to be defined in a list
em		To mark text that has stress emphasis	*
embed		For adding multimedia	*
	src	For specifying the URL of a multimedia file
	type	For identifying the MIME type of the multimedia file
	width, height	For specifying the size of the embedded multimedia player
fieldset		For grouping a set of form elements together
	disabled	For disabling all form controls within the fieldset	5
	form	For associating the element with a form that it is not a part of	5
	name	For providing the fieldset with a name for use later	5
figcaption		For identifying a caption or legend for the contents of its parent figure element	5
figure		For identifying content that is referenced within the main flow of the document but that could be moved elsewhere without affecting the flow of the document	5
footer		For identifying a footer for the nearest ancestor body, section, article, or asideelement	5
form		For designating a form to collect data for submission
	accept-charset	For identifying the character encoding to be used with the form submission (defaults to the page's character set)
	action	For giving the URL of the script that will process the form data
	autocomplete	For preventing the browser from providing/remembering autocompletion values when the attribute is set to "off" (the default is "on"; that is, autocompletion is allowed by default)	5
	enctype	For making sure files are sent to the server in the proper format
	method	For specifying how data should be sent to the server
	name	For providing the form with a name for use later
	novalidate	For allowing the form to be submitted without validation	5
	target	For identifying the target window or iframe of the form's submission	*
h1, h2, h3, h4, h5, h6		For creating headings
head		For creating the head section, which contains information about the page, including the title, author, keywords, style sheets, and scripts
header		For identifying a group of introductory content or navigational aids	5
hgroup		For identifying the heading of a section when a heading has multiple levels	5
hr		For identifying a paragraph-level thematic break	*
html		For identifying a text document as an HTML document
	manifest	For specifying an application cache manifest that is used when the page is offline	5
i		For marking a span of text that is in an alternate voice or mood or that is otherwise offset from the normal prose in a manner indicating a different quality of text	*
iframe		For creating a nested browsing context	*
	name	For specifying the name of the iframe, to be used as a target
	sandbox	For specifying additional restrictions on the content of the iframe, for security purposes	5
	seamless	For specifying whether the iframe should appear to be part of the containing page	5
	src	For specifying the URL of the initial page
	srcdoc	For specifying the URL of the initial page	5
	width, height	For specifying the size of the iframe
img		For inserting images on a page
	alt	For offering alternate text that is displayed if the image is not and that is for users of assistive devices
	crossorigin	For allowing images from third-party sites (that allow cross-origin access) to be used with the canvas element
	ismap	For indicating that the element provides access to a server-side image map (the element must be a descendant of an a element)
	src	For specifying the URL of an image
	usemap	For specifying the client-side image map that should be used with the referenced image
	width, height	For specifying the size of an image so that the page is loaded more quickly, or for scaling
input		For creating form elements
	accept	For informing the browser what file types will be accepted if the input type is "file"
	alt	For providing a textual alternate if the input type is "image"
	autocomplete	For preventing the browser from providing/remembering autocompletion values when the attribute is set to "off" (the default is "on"; that is, autocompletion is allowed by default)	5
	autofocus	For specifying that the input is to be focused as soon as the page is loaded	5
	checked	For marking a radio button or checkbox by default
	dirname	For identifying the direction of the entered text	5
	disabled	For indicating that the input is not available in the current state
	form	For associating the element with a form that it is not a part of	5
	formaction	For overriding the form's action attribute	5
	formenctype	For overriding the form's enctype attribute	5
	formmethod	For overriding the form's method attribute	5
	formnovalidate	For overriding the form's novalidate attribute	5
	formtarget	For overriding the form's target attribute	5
	list	For associating the input with a datalist	5
	max, min	For indicating the input element's allowed range of values	5
	maxlength	For specifying the maximum number of characters that can be entered in an input element
	multiple	For specifying whether the user can be allowed to enter more than one value	5
	name	For identifying data collected by an element
	pattern	For providing a regular expression against which the input element's value is checked	5
	placeholder	For providing a hint to aid in data entry	5
	readonly	For keeping visitors from changing certain form elements
	required	For identifying that the element must not be blank to submit the form (not allowed when the input type is "hidden," "image," or some button types)	5
	size	For specifying the length of a text or password box
	src	For specifying the URL of an active image
	step	For controlling the granularity and specificity of allowed values	5
	type	For specifying if a form element is a text box, password box, radio button, checkbox, hidden field, submit button, reset button, active image, date/time box, number box, or color box; for selecting from a range of values; or for entering a telephone number, email address, or set of search terms	*
	value	For specifying the default data in a form element
	width, height	For specifying the dimensions of the input (only allowed when the input type is "image")	*
ins		For marking an addition to the document
	cite	For referencing a URL that explains the change
	datetime	For specifying the time and date of the change
kbd		For marking user input
keygen		For generating a public and private key pair	5
	autofocus	For specifying that the keygen element is to be focused as soon as the page is loaded	5
	challenge	For generating a challenge to go along with the key pair	5
	disabled	For indicating that the element is not available in the current state	5
	form	For associating the element with a form that it is not a part of	5
	keytype	For identifying the kind of key pair to be generated	5
	name	For identifying the data that is gathered	5
label		For labeling form elements
	for	For specifying which form element the label belongs to
	form	For associating the element with a form that it is not a part of	5
legend		For labeling fieldsets
li		For creating a list item
	value	For determining the initial value of the list item (if it is the child of an ol)	*
link		For linking to an external style sheet or other external resource
	href	For specifying the URL of the resource
	hreflang	For specifying the language of the linked resource	5
	media	For defining a style sheet's targeted media types and/or media features
	rel	For identifying the kind of link
	sizes	For identifying the size of the referenced icon (for use only when the rel attribute is "icon")	5
	title	For labeling an alternate style sheet or other resource
	type	For noting a resource's MIME type (only required if the link type is not "text/css")
map		For creating a client-side image map
	name	For naming a map so it can be referenced later
mark		For highlighting text for reference purposes due to its relevance in another context	5
math		For embedding MathML in the page	5
menu		For containing a list of commands	*
	label	For labeling the menu	5
	type	For identifying the kind of menu being used: "context," "list" (default), or "toolbar"	5
meta		For associating various kinds of metadata with the page
	charset	For identifying the character encoding of the page itself	5
	content	For adding extra information about the page itself
	http-equiv	For creating automatic jumps to other pages, setting the default scripting language, and declaring the character encoding
	name	For identifying extra information about the page
meter		For representing a measurement within a known range	5
	high, low	For specifying a range of values as being "high" or "low"	5
	max, min	For identifying the maximum and minimum allowable values	5
	name	For identifying the data that is gathered	5
	optimum	For identifying the optimum value	5
	value	For indicating the current value of the meter (required)	5
nav		For identifying a section of a page that links to other pages or to parts within the page	5
noscript		For providing alternatives to scripts
object		For embedding objects in Web pages
	data	For identifying the source of the multimedia file to be embedded
	form	For associating the element with a form that it is not a part of	5
	name	For identifying the object (e.g., so it can be scripted)
	type	For noting the object's MIME type
	typemustmatch	For indicating that the resource specified in the object's data attribute must have the same MIME type as identified in the object's type attribute (allowed only if the object's data and type are both specified)
	usemap	For indicating whether the object has an associated image map
	width, height	For specifying the dimensions of the object's box
ol		For creating ordered lists
	reversed	For specifying whether the list is descending (. . . , 3, 2, 1)	5
	start	For specifying the initial value of the first list item	*
	type	For specifying the kind of numerals that should begin each list item	*
optgroup		For grouping a set of option elements under a common label within a select element
	disabled	For indicating that the element is not available in the current state
	label	For labeling the group of options
option		For creating the individual options in a select or datalist element
	disabled	For indicating that the element is not available in the current state
	label	For specifying how the option should appear in the menu
	selected	For making a menu option be selected by default in a blank form
	value	For specifying the initial value of a menu option
output		For representing the result of a calculation	5
	for	For creating an explicit association between the result of a calculation and the values that went into the calculation	5
	form	For associating the element with a form that it is not a part of	5
	name	For identifying the data that is gathered	5
p		For creating a paragraph
param		For setting properties of an object
	name	For identifying the kind of property
	value	For setting the value of the named property
pre		For representing a block of preformatted text
progress		For identifying the completion progress of a task	5
	max	Must be a valid floating-point number greater than zero (if present)	5
	value	Must be a valid floating-point number equal to or greater than zero (and less than or equal to the value of the max attribute, if it is present)	5
q		For quoting short passages from another source
	cite	For giving the URL of the source of the quote
rp		For providing parentheses around a ruby text component of a ruby annotation in browsers that don't support ruby annotations	5
rt		For marking the ruby text component of a ruby text annotation	5
ruby		For allowing text to be marked up with ruby annotations	5
s		For identifying text that is no longer accurate or no longer relevant	*
samp		For representing sample output from a program or computing system
script		For adding "automatic" scripts to a page
	async	For influencing script loading and execution	5
	charset	For specifying the character set an external script is written in
	defer	For influencing script loading and execution
	src	For referencing an external script
	type	For specifying the scripting language the script is written in (only required if the script type is not "text/javascript")	*
section		For identifying a section of a document	5
select		For creating form control for selecting from a set of options
	autofocus	For specifying that the select element is to be focused as soon as the page is loaded	5
	disabled	For indicating that the element is not available in the current state
	form	For associating the element with a form that it is not a part of	5
	multiple	For allowing users to choose more than one option in the menu
	name	For identifying the data collected by the menu
	required	For identifying that the user must select one of the options in order to submit the form (the first child option element must be a placeholder or an empty value)	5
	size	For specifying the number of items initially visible in the menu (and for displaying the menu as a list)
small		For representing side comments such as small print	*
source		For identifying multiple alternative media resources within an audio or video element	5
	crossorigin	For setting cross-origin request credentials	5
	media	For identifying the intended media type of the resource	5
	src	For identifying the URL of the audio or video file to play	5
	type	For noting a resource's MIME type	5
span		For wrapping content in an element that has no intrinsic semantic meaning	*
strong		For indicating strong importance of the element's content	*
style		For embedding style information in a page
	media	For indicating a style sheet's purpose
	scoped	For applying styles only to the descendants of the element's parent	5
	type	For indicating a style sheet's MIME type (only required if the style type is not "text/css")	*
sub		For creating subscripts
summary		For identifying a summary, caption, or legend for the contents of its parent detailselement	5
sup		For creating superscripts
svg		For embedding Scalable Vector Graphics in the page	5
table		For creating tables
tbody		For identifying the body of the table; in contrast with the header (thead) or footer (tfoot)
td, th		For creating regular and header cells, respectively, in a table
	colspan	For spanning a cell across more than one column
	rowspan	For spanning a cell across more than one row
	scope	For identifying to which rows, columns, rowgroups, or columngroups a th applies
textarea		For creating text block entry areas in a form
	autofocus	For specifying that the text area is to be focused as soon as the page is loaded	5
	dirname	For identifying the direction of the entered text	5
	disabled	For indicating that the element is not available in the current state
	form	For associating the element with a form that it is not a part of	5
	maxlength	For specifying the maximum number of characters that can be entered in a textarea
	name	For identifying the data that is gathered with the text block
	placeholder	For providing a hint to aid in data entry	5
	readonly	For protecting a text area's contents
	required	For indicating that the element must not be blank in order to submit the form	5
	rows, cols	For specifying the number of rows and columns in the text block
	wrap	For specifying the use of soft or hard wraps when content of field is submitted	5
tfoot, thead		For identifying the footer and header area of a table
time		For specifying a date, a time, or both	5
	datetime	For providing a machine-readable version of the time or date expressed in the element's text	5
	pubdate	For specifying the publication date and time of the element's ancestor article orbody element	5
title		For creating the title of the page (required)
tr		For creating rows in a table
track		For specifying external timed text tracks for the parent audio or video element	5
	default	For indicating which track is the default	5
	kind	For identifying whether the track is "subtitles," "captions," "descriptions," "chapters," or "metadata"	5
	label	For providing a user-readable name for the track	5
	src	For identifying the URL of the track's data	5
	srclang	For identifying the language of the track's data	5
u		For displaying a span of text with an unarticulated, though explicitly rendered, non-textual annotation	*
ul		For creating unordered lists
var		For marking text as a variable name
video		For embedding videos, movies, and captioned audio files	5
	autoplay	For telling the browser to start playing the video file as soon as it can	5
	controls	For telling the browser to provide controls for the video element	5
	crossorigin	For setting cross-origin request credentials	5
	loop	For telling the video file to start over without interruption upon reaching its end	5
	mediagroup	For associating multiple media files together	5
	muted	For controlling the default state of audio output	5
	poster	For specifying the URL of an image to use as a placeholder while media loads, or in case of an error loading	5
	preload	For specifying whether the browser can begin downloading the media file before the visitor starts playing it	5
	src	For identifying the URL of the video file to play	5
	width, height	For specifying the dimensions of the video	5
wbr		For identifying an appropriate place to insert a line-break into a word without hyphenation	5