HTML documentation index

Found 190 pages:

# Page Tags and summary
1 HTML HTML, HTML Lesson, HTML Programming, HTML Tutorials, HTML5, Hyper text, Landing, Reference, Web, What is HTML, l10n:priority
HTML (HyperText Markup Language) is the most basic building block of the Web. It describes and defines the content of a webpage. Other technologies besides HTML are generally used to describe a webpage's appearance/presentation (CSS) or functionality (JavaScript).
2 Block-level elements Beginner, Development, Guide, HTML, HTML5, Web
HTML (Hypertext Markup Language) elements are usually either "block-level" elements or "inline" elements. A block-level element occupies the entire space of its parent element (container), thereby creating a "block." This article helps to explain what this means.
3 CORS enabled image Advanced, CORS, Canvas, HTML, Reference, Référence, Security
The HTML specification introduces a crossorigin attribute for images that, in combination with an appropriate CORS header, allows images defined by the <img> element that are loaded from foreign origins to be used in canvas as if they were being loaded from the current origin.
4 CORS settings attributes Advanced, CORS, HTML, NeedsContent, NeedsExample, Reference, Security
In HTML5, some HTML elements which provide support for CORS, such as <img> or <video>, have a crossorigin attribute (crossOrigin property), which lets you configure the CORS requests for the element's fetched data.
5 DASH Adaptive Streaming for HTML 5 Video Guide, HTML, HTML5
Technical review completed.
6 Global attributes Attribute, HTML, NeedsBrowserCompatibility, Reference, Web
Global attributes may be specified on all HTML elements, even those not specified in the standard. That means that any non-standard elements must still permit these attributes, even though using those elements means that the document is no longer HTML5-compliant. For example, HTML5-compliant browsers hide content marked as <foo hidden>...<foo>, even though <foo> is not a valid HTML element.
7 accesskey Global attributes, HTML, Reference, Référence
The accesskey global attribute provides a hint for generating a keyboard shortcut for the current element. This attribute consists of a space-separated list of characters (one single Unicode code point). The browser uses the first one that exists on the computer keyboard layout.
8 class Global attributes, HTML, Reference
The class global attribute is a space-separated list of the classes of the element. Classes allows CSS and Javascript to select and access specific elements via the class selectors or functions like the DOM method document.getElementsByClassName.
9 contenteditable Global attributes, HTML, Reference, Référence
The contenteditable global attribute is an enumerated attribute indicating if the element should be editable by the user. If so, the browser modifies its widget to allow editing. The attribute must take one of the following values:
10 contextmenu Global attributes, HTML, Reference
The contextmenu global attribute is the id of a <menu> to use as the contextual menu for this element.
11 data-* Global attributes, HTML, Reference, Référence
The data-* global attributes form a class of attributes called custom data attributes, that allow proprietary information to be exchanged between the HTML and its DOM representation by scripts. All such custom data are available via the HTMLElement interface of the element the attribute is set on. The HTMLElement.dataset property gives access to them.
The * may be replaced by any name following the production rule of xml names with the following restrictions:
12 dir BiDi, Global attributes, HTML, Reference
The dir global attribute is an enumerated attribute indicates the directionality of the element's text. It can have the following values:
13 draggable Experimental, Expérimental, Global attributes, HTML, Reference, Référence
The draggable global attribute is an enumerated attribute that indicates whether the element can be dragged, using the HTML Drag and Drop API. It can have the following values:
14 dropzone Experimental, Expérimental, Global attributes, HTML, Reference, Référence
The dropzone global attribute is an enumerated attribute indicating what types of content can be dropped on an element, using the Drag and Drop API. It can have the following values:
15 hidden Global attributes, HTML, Reference, Référence
The hidden global attribute is a Boolean attribute indicating that the element is not yet, or is no longer, relevant. For example, it can be used to hide elements of the page that can't be used until the login process has been completed.
16 id Global attributes, HTML, Reference
The id global attribute defines a unique identifier (ID) which must be unique in the whole document. Its purpose is to identify the element when linking (using a fragment identifier), scripting, or styling (with CSS).
17 itemid Attribute, Global attribute, HTML, Microdata, Reference
The itemid global attribute is the unique, global identifier of an item. An itemid attribute can only be specified for an element that has both itemscope and itemtype attributes. Also, itemid can only be specified on elements that possess an itemscope attribute whose corresponding itemtype refers to or defines a vocabulary that supports global identifiers.
18 itemprop Attribute, Global attribute, HTML, Reference
The itemprop global attribute is used to add properties to an item. Every HTML element can have an itemprop attribute specified, and an itemprop consists of a name-value pair. Each name-value pair is called a property, and a group of one or more properties forms an item. Property values are either a string or a URL and can be associated with a very wide range of elements including <audio><embed><iframe><img><link><object><source> , <track>, and <video>.
19 itemref Attribute, Global attribute, HTML, Microdata, Reference
The global attribute itemref properties, which are not descendants of an element with the itemscope attribute, can be associated with the item using an itemref.
20 itemscope Attribute, Global attribute, HTML, Microdata, Reference
itemscope is a boolean global attribute that defines the scope of associated metadata. Specifying the itemscope attribute for an element creates a new item, which results in a number of name-value pairs that are associated with the element. A related attribute, itemtype, is used to specify the valid URL of a vocabulary (such as schema.org) that describes the item and its properties context. In each of the following examples, the vocabulary is from schema.org.
21 itemtype Attribute, Global attribute, HTML, Microdata, Reference
The global attribute itemtype specifies the URL of the vocabulary that will be used to define itemprop's (item properties) in the data structure.
22 lang Global attributes, HTML, Reference
The lang global attribute participates in defining the language of the element, the language that its non-editable elements are written in or the language that the editable elements should be written in. The tag contains one single entry value in the format defined in the Tags for Identifying Languages (BCP47) IETF document. If the tag content is the empty string the language is set to unknown; if the tag content is not valid, regarding BCP47, it is set to invalid.
23 slot Global attributes, HTML, Reference
The slot global attribute assigns a slot in a shadow DOM shadow tree to an element: An element with a slot attribute is assigned to the slot created by the <slot> element whose name attribute's value matches that slot attribute's value.
24 spellcheck Experimental, Expérimental, Global attributes, HTML, Reference, Référence
The spellcheck global attribute is an enumerated attribute defines whether the element may be checked for spelling errors. It may have the following values:
25 style Global attributes, HTML, Reference
The style global attribute contains CSS styling declarations to be applied to the element. Note that it is recommended for styles to be defined in a separate file or files. This attribute and the <style> element have mainly the purpose of allowing for quick styling, for example for testing purposes.
26 tabindex Global attributes, HTML, Reference, Référence
The tabindex global attribute is an integer indicating if the element can take input focus (is focusable), if it should participate to sequential keyboard navigation, and if so, at what position. It can take several values:
27 title Global attributes, HTML, Reference, Référence
The title global attribute contains text representing advisory information, related to the element it belongs to. This information can be typically, but not necessarily, presented to the user as a tooltip.
28 translate Experimental, Expérimental, Global attributes, HTML, Reference, Référence
The translate global attribute is an enumerated attribute that is used to specify whether an element's attribute values and the values of its Text node children are to be translated when the page is localized, or whether to leave them unchanged. It can have the following values:
29 HTML attribute reference Attribute, HTML, Reference, Référence, Web
Elements in HTML have attributes; these are additional values that configure the elements or adjust their behavior in various ways to meet the criteria the users want.
30 HTML documentation index HTML
Found 189 pages:
31 HTML element reference Basic, Element, HTML, Reference, Web, l10n:priority
This page lists all the HTML elements.
32 &lt;a&gt; Content, Element, HTML, HTML text-level semantics, Reference, Web
The HTML <a> element (or anchor element) creates a hyperlink to other web pages, files, locations within the same page, email addresses, or any other URL.
33 &lt;abbr&gt; Element, HTML, HTML text-level semantics, Reference, Web, abbr
The HTML <abbr> element represents an abbreviation and optionally provides a full description for it. If present, the title attribute must contain this full description and nothing else.
34 &lt;acronym&gt; Element, HTML, HTML:Flow content, Obsolete, Reference, Référence, Web, Élément
The HTML Acronym Element (<acronym>) allows authors to clearly indicate a sequence of characters that compose an acronym or abbreviation for a word. This element has been removed in HTML5. Use <abbr> element.
35 &lt;address&gt; Element, HTML, HTML sections, Reference, Web
The HTML <address> element supplies contact information for its nearest <article> or <body> ancestor; in the latter case, it applies to the whole document.
36 &lt;applet&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Applet Element (<applet>) identifies the inclusion of a Java applet.
37 &lt;area&gt; Content, Element, HTML, Multimedia, Reference, Web, embedded
The HTML <area> element defines a hot-spot region on an image, and optionally associates it with a hypertext link. This element is used only within a <map> element.
38 &lt;article&gt; Element, HTML, HTML sections, Reference, Web
The HTML <article> element represents a self-contained composition in a document, page, application, or site, which is intended to be independently distributable or reusable (e.g., in syndication). Examples include: a forum post, a magazine or newspaper article, or a blog entry.
39 &lt;aside&gt; Element, HTML, HTML sections, HTML5, Reference, Web
The HTML <aside> element represents a section of a document with content connected tangentially to the main content of the document (often presented as a sidebar).
40 &lt;audio&gt; Element, HTML, HTML embedded content, HTML5, Media, Multimedia, NeedsMobileBrowserCompatibility, Reference, Web
The HTML <audio> element is used to embed sound content in documents. It may contain one or more audio sources, represented using the src attribute or the <source> element: the browser will choose the most suitable one. It can also be the destination for streamed media, using a MediaStream.
41 &lt;b&gt; Element, HTML, HTML text-level semantics, HTML:Flow content, HTML:Phrasing content, Reference, Web
The HTML <b> element represents a span of text stylistically different from normal text, without conveying any special importance or relevance, and that is typically rendered in boldface.
42 &lt;base&gt; Element, HTML, HTML document metadata, Reference, Web
The HTML <base> element specifies the base URL to use for all relative URLs contained within a document. There can be only one <base> element in a document.
43 &lt;basefont&gt; Element, HTML, Obsolete, Reference, Web, Élément
The HTML basefont element (<basefont>) establishes a default font size for a document. Font size then can be varied relative to the base font size using the <font> element.
44 &lt;bdi&gt; BiDi, Element, HTML, HTML text-level semantics, Reference, Web
The HTML <bdi> element (bidirectional isolation) isolates a span of text that might be formatted in a different direction from other text outside it.
45 &lt;bdo&gt; BiDi, Element, HTML, HTML text-level semantics, NeedsCompatTable, Reference, Web
The HTML <bdo> element (bidirectional override) is used to override the current directionality of text. It causes the directionality of the characters to be ignored in favor of the specified directionality.
46 &lt;bgsound&gt; Element, HTML, Non-standard, Reference, Référence, Web, Élément
The HTML Background Sound Element (<bgsound>) is an Internet Explorer element associating a background sound with a page.
47 &lt;big&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Big Element (<big>) makes the text font size one size bigger (for example, from small to medium, or from large to x-large) up to the browser's maximum font size.
48 &lt;blink&gt; Blink, Element, HTML, Obsolete, Reference, Web
The HTML Blink Element (<blink>) is a non-standard element causing the enclosed text to flash slowly.
49 &lt;blockquote&gt; Element, HTML, HTML:Flow content, Reference, Web
The HTML <blockquote> Element (or HTML Block Quotation Element) indicates that the enclosed text is an extended quotation. Usually, this is rendered visually by indentation (see Notes for how to change it). A URL for the source of the quotation may be given using the cite attribute, while a text representation of the source can be given using the <cite> element.
50 &lt;body&gt; Element, HTML, Reference, Sections, Web
The HTML <body> Element represents the content of an HTML document. There can be only one <body> element in a document.
51 &lt;br&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <br> element produces a line break in text (carriage-return). It is useful for writing a poem or an address, where the division of lines is significant.
52 &lt;button&gt; Element, Forms, HTML, HTML forms, Intermediate, Reference, Web
The HTML <button> element represents a clickable button.
53 &lt;canvas&gt; Canvas, Element, HTML, HTML scripting, HTML5, Reference, Web
Use the HTML <canvas> element with the canvas scripting API to draw graphics and animations.
54 &lt;caption&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <caption> element represents the title of a table. Though it is always the first descendant of a <table>, its styling, using CSS, may place it elsewhere, relative to the table.
55 &lt;center&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Center Element (<center>) is a block-level element that can contain paragraphs and other block-level and inline elements. The entire content of this element is centered horizontally within its containing element (typically, the <body>).
56 &lt;cite&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <cite> element represents a reference to a creative work. It must include the title of a work or a URL reference, which may be in an abbreviated form according to the conventions used for the addition of citation metadata.
57 &lt;code&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <code> element represents a fragment of computer code. By default, it is displayed in the browser's default monospace font.
58 &lt;col&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <col> element defines a column within a table and is used for defining common semantics on all common cells. It is generally found within a <colgroup> element.
59 &lt;colgroup&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <colgroup> element defines a group of columns within a table.
60 &lt;command&gt; HTML, HTML5, HTML:Element, HTML:Element Reference, NeedsBrowserAgnosticism, Obsolete
The command element represents a command which the user can invoke.
61 &lt;content&gt; Deprecated, Element, HTML, NeedsContent, Reference, Web
The HTML <content> element is used inside of Shadow DOM as an insertion point. It is not intended to be used in ordinary HTML. It is used with Web Components. It has now been replaced by the <slot> element.
62 &lt;data&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <data> element links a given content with a machine-readable translation. If the content is time- or date-related, the <time> must be used.
63 &lt;datalist&gt; Element, HTML, HTML forms, HTML5, Intermediate, Reference, Web
The HTML <datalist> element contains a set of <option> elements that represent the values available for other controls.
64 &lt;dd&gt; Element, HTML, HTML grouping content, Reference, Web
The HTML <dd> element indicates the description of a term in a description list (<dl>).
65 &lt;del&gt; Element, HTML, HTML edits, Reference, Web
The HTML <del> element represents a range of text that has been deleted from a document. This element is often (but need not be) rendered with strike-through text.
66 &lt;details&gt; Element, HTML, HTML interactive elements, Reference, Web
The HTML <details> element is used as a disclosure widget from which the user can retrieve additional information.
67 &lt;dfn&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <dfn> element represents the defining instance of a term.
68 &lt;dialog&gt; Dialog, Element, Experimental, HTML, HTML interactive elements, Reference, Web
The HTML <dialog> element represents a dialog box or other interactive component, such as an inspector or window.
69 &lt;dir&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML directory element (<dir>) represents a directory, namely a collection of filenames.
70 &lt;div&gt; Element, HTML, HTML grouping content, HTML:Flow content, Reference, Web
The HTML <div> element is the generic container for flow content and does not inherently represent anything. Use it to group elements for purposes such as styling (using the class or id attributes), marking a section of a document in a different language (using the lang attribute), and so on.
71 &lt;dl&gt; Element, HTML, HTML grouping content, Reference, Web
The HTML <dl> element represents a description list. The element encloses a list of groups of terms and descriptions. Common uses for this element are to implement a glossary or to display metadata (a list of key-value pairs).
72 &lt;dt&gt; Element, HTML, HTML grouping content, Reference
The HTML <dt> element identifies a term in a description list. This element can occur only as a child element of a <dl>. It is usually followed by a <dd> element; however, multiple <dt> elements in a row indicate several terms that are all defined by the immediate next <dd> element.
73 &lt;element&gt; Element, HTML, NeedsContent, Obsolete
The HTML <element> element is used to define new custom DOM elements.
74 &lt;em&gt; Element, HTML, HTML text-level semantics, Reference, Web, font-style
The HTML <em> element marks text that has stress emphasis. The <em> element can be nested, with each level of nesting indicating a greater degree of emphasis.
75 &lt;embed&gt; Element, HTML, HTML embedded content, HTML5, Reference, Web
The HTML <embed> element represents an integration point for an external application or interactive content (in other words, a plug-in).
76 &lt;fieldset&gt; Element, Forms, HTML, HTML forms, Intermediate, Reference, Web
The HTML <fieldset> element is used to group several controls as well as labels (<label>) within a web form.
77 &lt;figcaption&gt; Element, HTML, HTML grouping content, Reference
The HTML <figcaption> element represents a caption or a legend associated with a figure or an illustration described by the rest of the data of the <figure> element which is its immediate ancestor.
78 &lt;figure&gt; Element, HTML, HTML grouping content, Reference
The HTML <figure> element represents self-contained content, frequently with a caption (<figcaption>), and is typically referenced as a single unit.
79 &lt;font&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Font Element (<font>) defines the font size, color and face for its content.
80 &lt;footer&gt; Element, HTML, HTML sections, Reference
The HTML <footer> element represents a footer for its nearest sectioning content or sectioning root element. A footer typically contains information about the author of the section, copyright data or links to related documents.
81 &lt;form&gt; Element, Forms, HTML, HTML forms, Intermediate, Reference, Web
The HTML <form> element represents a document section that contains interactive controls to submit information to a web server.
82 &lt;frame&gt; Deprecated, Element, HTML, Reference, Référence, Web, Élément
<frame> is an HTML element which defines a particular area in which another HTML document can be displayed. A frame should be used within a <frameset>.
83 &lt;frameset&gt; Deprecated, Element, HTML, Reference, Référence, Web, Élément
<frameset> is an HTML element which is used to contain <frame> elements.
84 &lt;h1&gt;–<h6> Element, HTML, HTML sections, Reference, Web
The HTML <h1><h6> elements represent six levels of section headings. <h1> is the highest section level and <h6> is the lowest.
85 &lt;head&gt; Element, HTML, HTML document metadata, Reference, Web
The HTML <head> element provides general information (metadata) about the document, including its title and links to its scripts and style sheets.
86 &lt;header&gt; Element, HTML, HTML sections, Reference
The HTML <header> element represents a group of introductory or navigational aids. It may contain some heading elements but also other elements like a logo, a search form, and so on.
87 &lt;hgroup&gt; Element, Experimental, HTML, HTML sections, HTML5, Reference, Web
The HTML <hgroup> element represents a multi-level heading for a section of a document. It groups a set of <h1>–<h6> elements.
88 &lt;hr&gt; Element, HTML, HTML grouping content, Reference
The HTML <hr> element represents a thematic break between paragraph-level elements (for example, a change of scene in a story, or a shift of topic with a section). In previous versions of HTML, it represented a horizontal rule. It may still be displayed as a horizontal rule in visual browsers, but is now defined in semantic terms, rather than presentational terms.
89 &lt;html&gt; Element, HTML, HTML Root Element, Reference, Web
The HTML <html> element represents the root (top-level element) of an HTML document, so it is also referred to as the root element. All other elements must be descendants of this element.
90 &lt;i&gt; Element, HTML, HTML text-level semantics, Reference, Web, em, font-style
The HTML <i> element represents a range of text that is set off from the normal text for some reason, for example, technical terms, foreign language phrases, or fictional character thoughts. It is typically displayed in italic type.
91 &lt;iframe&gt; Content, Element, HTML, Reference, Web, embedded
The HTML Inline Frame Element <iframe> represents a nested browsing context, effectively embedding another HTML page into the current page. In HTML 4.01, a document may contain a head and a body or a head and a frameset, but not both a body and a frameset. However, an <iframe> can be used within a normal document body. Each browsing context has its own session history and active document. The browsing context that contains the embedded content is called the parent browsing context. The top-level browsing context (which has no parent) is typically the browser window.
92 &lt;image&gt; HTML, Non-standard
The HTML <image> element was an experimental element designed to display pictures. It never was implemented and the standard <img> element must be used.
93 &lt;img&gt; Content, Element, Graphics, HTML, Image, Multimedia, Reference, Web, embedded
The HTML <img> element represents an image in the document.
94 &lt;input&gt; Element, Forms, HTML, HTML forms, HTML input tag, MakeBrowserAgnostic, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference, Web
The HTML <input> element is used to create interactive controls for web-based forms in order to accept data from the user.
95 &lt;input type="button"&gt; Element, Forms, HTML, HTML forms, Input, Input Element, Input Type, Reference, button
<input> elements of type "button"  are rendered as simple push buttons, which can be programmed to control custom functionality anywhere on a webpage as required when assigned an event handler function (typically for the click event).
96 &lt;input type="checkbox"&gt; Element, HTML, HTML forms, Input, Input Types, Reference, checkbox, form
<input> elements of type checkbox are rendered by default as square boxes that are checked (ticked) when activated, like you might see in an official government paper form. They allow you to select single values for submission in a form (or not).
97 &lt;input type="color"&gt; Element, HTML, Input, Reference, color
<input> elements of type "color" provide a way for the user to specify a color, either by using a color well control to open a visual color picker or by entering the color into a text field in its "#rrggbb" hexadecimal format.
98 &lt;input type="date"&gt; Date, Element, HTML, HTML forms, Input, Input Element, Input Type, Reference
<input> elements of type date create input fields allowing a date to be easily entered — this includes year, month and day, but not time.
99 &lt;input type="datetime"&gt; Element, HTML, HTML forms, Input, Input Element, Input Type, Obsolete, Reference, datetime
The HTML <input type="datetime"> was a control for entering a date and time (hour, minute, second, and fraction of a second) as well as a timezone. This feature has been removed from WHATWG HTML, and is no longer supported in browsers.
100 &lt;input type="datetime-local"&gt; Date, Element, HTML, HTML forms, Input, Input Element, Input Type, Reference, Time, datetime-local
<input> elements of type datetime-local create input fields allowing a date and time to be easily entered — this includes year, month, day, hours, and minutes.
101 &lt;input type="email"&gt; Email, Forms, HTML, HTML forms, Input Type, Reference
<input> elements of type "email" are used to let the user enter and edit an email address, or, if the multiple attribute is specified, a list of email addresses. The input value is automatically validated to ensure that it's either empty or a properly-formatted email address (or list of addresses) before the form can be submitted.
102 &lt;input type="hidden"&gt; Element, Forms, HTML, HTML forms, Input, Input Types, Reference, hidden
<input> elements of type "hidden" let web developers include data that cannot be seen or modified by users when a form is submitted. For example, the ID of the content that is currently being ordered or edited, or a unique security token. Hidden inputs are completely invisible in the rendered page, and there is no way to make it visible in the page's content.
103 &lt;input type="image"&gt; Element, Forms, HTML, HTML forms, Input, Input Type, Number, Reference
<input> elements of type "image" are used to create graphical submit buttons, i.e. submit buttons that take the form of an image rather than text.
104 &lt;input type="number"&gt; Element, Forms, HTML, HTML forms, Input, Input Element, Input Type, Number, Reference
<input> elements of type "number" are used to let the user enter a number. They include built-in validation to reject non-numerical entries.
105 &lt;input type="password"&gt; Element, Forms, HTML, HTML forms, HTML input tag, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference, Web, password
<input> elements of type "password" provide a way for the user to securely enter a password. The element is presented as a one-line plain text editor control in which the text is obscured so that it cannot be read, usually by replacing each character with a symbol such as the asterisk ("*") or a dot ("•"). This character will vary depending on the user agent and OS.
106 &lt;input type="range"&gt;
<input> elements of type "range" let the user specify a numeric value which must be no less than a given value, and no more than another given value. The precise value, however, is not considered important. This is typically represented using a slider or dial control rather than a text entry box (which is how the "number" input type is typically represented onscreen).
107 &lt;ins&gt; Element, HTML, HTML edits, Reference, Web
The HTML <ins> element represents a range of text that has been added to a document.
108 &lt;isindex&gt; Deprecated, Element, HTML, Reference, Référence, Web, Élément
<isindex> is an obsolete HTML element that puts a text field in a page for querying the document.
109 &lt;kbd&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <kbd> element represents user input and produces an inline element displayed in the browser's default monospace font.
110 &lt;keygen&gt; Deprecated, Element, HTML, HTML forms, HTML5, Reference, Web
The HTML <keygen> element exists to facilitate generation of key material, and submission of the public key as part of an HTML form. This mechanism is designed for use with Web-based certificate management systems. It is expected that the <keygen> element will be used in an HTML form along with other information needed to construct a certificate request, and that the result of the process will be a signed certificate.
111 &lt;label&gt; Element, Forms, HTML, HTML forms, Reference, Web
The HTML <label> element represents a caption for an item in a user interface.
112 &lt;legend&gt; Element, Forms, HTML, HTML forms, Reference, Web
The HTML <legend> element represents a caption for the content of its parent <fieldset>.
113 &lt;li&gt; Element, HTML, HTML grouping content, Reference
The HTML <li> element is used to represent an item in a list. It must be contained in a parent element: an ordered list (<ol>), an unordered list (<ul>), or a menu (<menu>). In menus and unordered lists, list items are usually displayed using bullet points. In ordered lists, they are usually displayed with an ascending counter on the left, such as a number or letter.
114 &lt;link&gt; Element, HTML, HTML document metadata, Reference, Web, metadata
The HTML <link> element specifies relationships between the current document and an external resource. Possible uses for this element include defining a relational framework for navigation. This Element is most used to link to style sheets.
115 &lt;listing&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Listing Element (<listing>) renders text between the start and end tags without interpreting the HTML in between and using a monospaced font. The HTML 2 standard recommended that lines shouldn't be broken when not greater than 132 characters.
116 &lt;main&gt; Element, HTML, HTML grouping content, Reference
The HTML <main> element represents the main content of  the <body> of a document or application. The main content area consists of content that is directly related to, or expands upon the central topic of a document or the central functionality of an application.
117 &lt;map&gt; Element, HTML, HTML embedded content, Multimedia, Reference, Web
The HTML <map> element is used with <area> elements to define an image map (a clickable link area).
118 &lt;mark&gt; Element, HTML, HTML text-level semantics, HTML5, Reference, Web
The HTML <mark> element represents highlighted text, i.e., a run of text marked for reference purpose, due to its relevance in a particular context. For example it can be used in a page showing search results to highlight every instance of the searched-for word.
119 &lt;marquee&gt; Element, HTML, Obsolete, Reference, Web, marquee
The HTML <marquee> element is used to insert a scrolling area of text. You can control what happens when the text reaches the edges of its content area using its attributes.
120 &lt;menu&gt; Element, Experimental, HTML, HTML interactive elements, Reference, UX, Web, menus
The HTML <menu> element represents a group of commands that a user can perform or activate. This includes both list menus, which might appear across the top of a screen, as well as context menus, such as those that might appear underneath a button after it has been clicked.
121 &lt;menuitem&gt; Element, Experimental, HTML, HTML interactive elements, HTML5, Reference, Web
The HTML <menuitem> element represents a command that a user is able to invoke through a popup menu. This includes context menus, as well as menus that might be attached to a menu button.
122 &lt;meta&gt; Document, Element, HTML, HTML document metadata, Reference, Web, metadata
The HTML <meta> element represents metadata that cannot be represented by other HTML meta-related elements, like <base>, <link>, <script>, <style> or <title>.
123 &lt;meter&gt; Element, HTML, HTML forms, HTML5, Reference, Web
The HTML <meter> element represents either a scalar value within a known range or a fractional value.
124 &lt;multicol&gt; Deprecated, Experimental, HTML, Non-standard
The HTML <multicol> element was an experimental element designed to allow multi-column layouts. It never got any significant traction and is not implemented in any major browsers.
125 &lt;nav&gt; Element, HTML, HTML sections, Reference, Web
The HTML <nav> element represents a section of a page that links to other pages or to parts within the page: a section with navigation links.
126 &lt;nobr&gt; Element, HTML, NeedsCompatTable, Non-standard, Reference, Référence, Web, Élément
The HTML <nobr> element prevents a text from breaking into a new line automatically, so it is displayed on one long line and scrolling might be necessary. This tag is not standard HTML and should not be used.
127 &lt;noembed&gt; Deprecated, HTML, NeedsCompatTable, Non-standard, Reference, Référence
The <noembed> element is a deprecated and non-standard way to provide alternative, or "fallback", content for browsers that do not support the <embed> element or do not support embedded content an author wishes to use.
128 &lt;noframes&gt; Element, HTML, Reference, Référence, Web, Élément
<noframes> is an HTML element which is used to support browsers which are not able to support <frame> elements or configured to do so.
129 &lt;noscript&gt; Element, HTML, HTML scripting, Reference, Web
The HTML <noscript> element defines a section of html to be inserted if a script type on the page is unsupported or if scripting is currently turned off in the browser.
130 &lt;object&gt; Element, HTML, HTML embedded content, Reference, Web
The HTML <object> element represents an external resource, which can be treated as an image, a nested browsing context, or a resource to be handled by a plugin.
131 &lt;ol&gt; Element, HTML, HTML grouping content, HTML:Flow content, Reference
The HTML <ol> element represents an ordered list of items, typically rendered as a numbered list.
132 &lt;optgroup&gt; Element, Forms, HTML, HTML forms, Reference, Web
The HTML <optgroup> element creates a grouping of options within a <select> element.
133 &lt;option&gt; Element, Forms, HTML, HTML forms, Reference, Web
The HTML <option> element is used to define an item contained in a <select>, an <optgroup>, or a <datalist> element. As such, <option> can represent menu items in popups and other lists of items in an HTML document.
134 &lt;output&gt; Element, HTML, HTML forms, HTML5, HTML:Flow content, NeedsMobileBrowserCompatibility, Reference, Web
The HTML <output> element represents the result of a calculation or user action.
135 &lt;p&gt; Element, HTML, HTML grouping content, Reference, Web
The HTML <p> element represents a paragraph of text.
136 &lt;param&gt; Element, HTML, HTML embedded content, Reference, Web
The HTML <param> element defines parameters for an <object> element.
137 &lt;picture&gt; Element, Experimental, HTML, Reference, Web, picture
The HTML <picture> element is a container used to specify multiple <source> elements for a specific <img> contained in it. The browser will choose the most suitable source according to the current layout of the page (the constraints of the box the image will appear in) and the device it will be displayed on (e.g. a normal or hiDPI device.)
138 &lt;plaintext&gt; Element, HTML, NeedsCompatTable, Obsolete, Reference, Référence, Web, Élément
The HTML Plaintext Element (<plaintext>) renders everything following the start tag as raw text, without interpreting any HTML. There is no closing tag, since everything after it is considered raw text.
139 &lt;pre&gt; Element, HTML, HTML grouping content, HTML:Flow content, Reference, Web
The HTML <pre> element represents preformatted text. Text within this element is typically displayed in a non-proportional ("monospace") font exactly as it is laid out in the file. Whitespace inside this element is displayed as typed.
140 &lt;progress&gt; Element, HTML, HTML forms, HTML5, Reference, Web
The HTML <progress> element represents the completion progress of a task, typically displayed as a progress bar.
141 &lt;q&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <q> element indicates that the enclosed text is a short inline quotation. This element is intended for short quotations that don't require paragraph breaks; for long quotations use the <blockquote> element.
142 &lt;rp&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <rp> element is used to provide fall-back parentheses for browsers that do not support display of ruby annotations using the <ruby> element.
143 &lt;rt&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <rt> element embraces pronunciation of characters presented in a ruby annotations, which are used to describe the pronunciation of East Asian characters. This element is always used inside a <ruby> element.
144 &lt;rtc&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <rtc> element embraces semantic annotations of characters presented in a ruby of <rb> elements used inside of <ruby> element. <rb> elements can have both pronunciation (<rt>) and semantic (<rtc>) annotations.
145 &lt;ruby&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <ruby> element represents a ruby annotation. Ruby annotations are for showing pronunciation of East Asian characters.
146 &lt;s&gt; Element, HTML, HTML text-level semantics, NeedsNewBrowserCompatTable, Reference, Web, text-decoration
The HTML <s> element renders text with a strikethrough, or a line through it. Use the <s> element to represent things that are no longer relevant or no longer accurate. However, <s> is not appropriate when indicating document edits; for that, use the <del> and <ins> elements, as appropriate.
147 &lt;samp&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <samp> element is an element intended to identify sample output from a computer program. It is usually displayed in the browser's default monotype font (such as Lucida Console).
148 &lt;script&gt; Element, HTML, HTML scripting, Reference, Web
The HTML <script> element is used to embed or reference an executable script.
149 &lt;section&gt; Element, HTML, HTML sections, Reference, Web
The HTML <section> element represents a standalone section of functionality contained within an HTML document, typically with a heading, which doesn't have a more specific semantic element to represent it.
150 &lt;select&gt; Element, Forms, HTML, HTML forms, Reference, Web, events
The HTML <select> element represents a control that provides a menu of options:
151 &lt;shadow&gt; Element, HTML, Obsolete, Reference
The HTML <shadow> element is used as a shadow DOM insertion point. You might use it if you have created multiple shadow roots under a shadow host. It is not useful in ordinary HTML. It is used with Web Components.
152 &lt;slot&gt; Element, HTML, Reference, Web Components, shadow dom
The HTML <slot> element is a placeholder inside a web component that you can fill with your own markup, with the effect of composing different DOM trees together.
153 &lt;small&gt; Element, HTML, HTML text-level semantics, Reference, Référence, Web, font-size, Élément
The HTML <small> element makes the text font size one size smaller (for example, from large to medium, or from small to x-small) down to the browser's minimum font size.  In HTML5, this element is repurposed to represent side-comments and small print, including copyright and legal text, independent of its styled presentation.
154 &lt;source&gt; Element, HTML, HTML embedded content, Media, Reference, Web
The HTML <source> element specifies multiple media resources for either the <picture>, the <audio> or the <video> element. It is an empty element. It is commonly used to serve the same media content in multiple formats supported by different browsers.
155 &lt;spacer&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
<spacer> is an HTML element which is used for inserting white spaces to web pages. It was created by NetScape for achieving same effect as a single-pixel layout GIF image, which was something web designers used to use to add white spaces to web pages, without actually using a GIF. However <spacer> is not supported by any major browser and same effects can be created with various CSS rules. In Mozilla applications, support for this element was removed in Gecko 2.0. Therefore usage of <spacer> is unnecessary.
156 &lt;span&gt; Element, HTML, HTML text-level semantics, HTML:Flow content, Reference, Web
The HTML <span> element is a generic inline container for phrasing content, which does not inherently represent anything. It can be used to group elements for styling purposes (using the class or id attributes), or because they share attribute values, such as lang.
157 &lt;strike&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML <strike> element (or HTML Strikethrough Element) places a strikethrough (horizontal line) over text.
158 &lt;strong&gt; Element, HTML, HTML text-level semantics, Reference, Référence, Web, font-weight, Élément
The HTML <strong> element gives text strong importance, and is typically displayed in bold.
159 &lt;style&gt; Element, HTML, HTML document metadata, Reference, Web
The HTML <style> element contains style information for a document, or part of a document. By default, the style instructions written inside that element are expected to be CSS.
160 &lt;sub&gt; Element, HTML, HTML text-level semantics, Reference, Référence, Web, Élément
The HTML <sub> element defines a span of text that should be displayed, for typographic reasons, lower, and often smaller, than the main span of text.
161 &lt;summary&gt; Element, HTML, HTML interactive elements, Reference, Web
The HTML <summary> element is used as a summary, caption, or legend for the content of a <details> element.
162 &lt;sup&gt; Element, HTML, HTML text-level semantics, Reference, Référence, Web, Élément
The HTML <sup> element defines a span of text that should be displayed, for typographic reasons, higher, and often smaller, than the main span of text.
163 &lt;table&gt; CSS, Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <table> element represents tabular data —that is, information expressed via a two-dimensional data table.
164 &lt;tbody&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <tbody> element groups one or more <tr> elements as the body of a <table> element.
165 &lt;td&gt; Element, HTML, HTML tabular data, Reference, Référence, Tables, Web, Élément
The HTML <td> element defines a cell of a table that contains data. It participates in the table model.
166 &lt;template&gt; Element, HTML, Reference, Web, Web Components
Technical review completed.
167 &lt;textarea&gt; Element, Forms, HTML, HTML forms, Reference, Web, textarea
The HTML <textarea> element represents a multi-line plain-text editing control.
168 &lt;tfoot&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <tfoot> element defines a set of rows summarizing the columns of the table.
169 &lt;th&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <th> element defines a cell as header of a group of table cells. The exact nature of this group is defined by the scope and headers attributes.
170 &lt;thead&gt; Element, HTML, HTML tabular data, Reference, Référence, Tables, Web, Élément
The HTML <thead> element defines a set of rows defining the head of the columns of the table.
171 &lt;time&gt; Element, HTML, HTML text-level semantics, HTML5, Reference, Web
The HTML <time> element represents either a time on a 24-hour clock or a precise date in the Gregorian calendar (with optional time and timezone information).
172 &lt;title&gt; Element, HTML, HTML document metadata, Reference, Web
The HTML <title> element defines the title of the document, shown in a browser's title bar or on the page's tab. It can only contain text, and any contained tags are ignored.
173 &lt;tr&gt; Element, HTML, HTML tabular data, Reference, Tables, Web
The HTML <tr> element defines a row of cells in a table. Those can be a mix of <td> and <th> elements.
174 &lt;track&gt; Element, HTML, HTML embedded content, HTML5, Multimedia, Reference, Web
The HTML <track> element is used as a child of the media elements—<audio> and <video>. It lets you specify timed text tracks (or time-based data), for example to automatically handle subtitles. The tracks are formatted in WebVTT format (.vtt files) — Web Video Text Tracks.
175 &lt;tt&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Teletype Text Element (<tt>) produces an inline element displayed in the browser's default monotype font. This element was intended to style text as it would display on a fixed width display, such as a teletype. It probably is more common to display fixed width type using the <code> element.
176 &lt;u&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <u> element renders text with an underline, a line under the baseline of its content. In HTML5, this element represents a span of text with an unarticulated, though explicitly rendered, non-textual annotation, such as labeling the text as being a proper name in Chinese text (a Chinese proper name mark), or labeling the text as being misspelled.
177 &lt;ul&gt; Element, HTML, HTML grouping content, Reference
The HTML <ul> element represents an unordered list of items, typically rendered as a bulleted list.
178 &lt;var&gt; Element, HTML, HTML text-level semantics, Reference, Référence, Web, Élément
The HTML <var> element represents a variable in a mathematical expression or a programming context.
179 &lt;video&gt; Element, HTML, HTML embedded content, HTML5, Media, Multimedia, NeedsMobileBrowserCompatibility, Reference, Web
Use the HTML <video> element to embed video content in a document.
180 &lt;wbr&gt; Element, HTML, HTML text-level semantics, Reference, Web
The HTML <wbr> element represents a word break opportunity—a position within text where the browser may optionally break a line, though its line-breaking rules would not otherwise create a break at that location.
181 &lt;xmp&gt; Element, HTML, Obsolete, Reference, Référence, Web, Élément
The HTML Example Element (<xmp>) renders text between the start and end tags without interpreting the HTML in between and using a monospaced font. The HTML2 specification recommended that it should be rendered wide enough to allow 80 characters per line.
182 nextid Deprecated, Element, HTML, Obsolete, Reference, Web
<nextid> is an obsolete HTML element that served to enable the NeXT web designing tool to generate automatic NAME labels for its anchors.
183 HTML reference HTML, Landing, Reference, Web
This HTML reference describes all elements and attributes of HTML, including global attributes that apply to all elements.
184 Inline elements Beginner, HTML, HTML:Element Reference
HTML (Hypertext Markup Language) elements are usually "inline" elements or "block-level" elements. An inline element occupies only the space bounded by the tags that define the inline element. The following example demonstrates the inline element's influence:
185 Link types HTML, Link, Link types, Reference
In HTML, the following link types indicate the relationship between two documents, in which one links to the other using an <a>, <area>, or <link> element.
186 Media formats supported by the HTML audio and video elements Codecs, Containers, Firefox, HTML, HTML5, Media, Reference, Video, file formats, media formats
The <audio> and <video> elements provide support for playing audio and video media without requiring plug-ins.
187 Microdata Composing, Example, HTML, Microdata, Reference, SEO, Search
Microdata is a WHATWG HTML specification used to nest metadata within existing content on web pages.[1] Search engines, web crawlers, and browsers can extract and process microdata from a web page and use it to provide a richer browsing experience for users. Search engines benefit greatly from direct access to this structured data because it allows search engines to understand the information on web pages and provide more relevant results to users. Microdata uses a supporting vocabulary to describe an item and name-value pairs to assign values to its properties. Microdata is an attempt to provide a simpler way of annotating HTML elements with machine-readable tags than the similar approaches of using RDFa and microformats.
188 Microformats HTML, NeedsContent, NeedsMarkupWork
Microformats (sometimes abbreviated μF) are simple conventions used to embed semantics in HTML and quickly provide an API to be used by search engines, aggregators, and other tools. These small patterns of HTML are used for marking entities that range from fundamental to domain-specific information, such as people, organizations, events, and locations.
189 Optimizing your pages for speculative parsing Advanced, HTML, HTML5, NeedsUpdate, Web Development
Traditionally in browsers the HTML parser has run on the main thread and is blocked after a </script> tag until the script has been retrieved from the network and executed. The HTML parser in Firefox 4 and later supports speculative parsing off of the main thread. It parses ahead while scripts are being downloaded and executed. As in Firefox 3.5 and 3.6, the HTML parser starts speculative loads for scripts, style sheets and images it finds ahead in the stream. However, in Firefox 4 and later the HTML parser also runs the HTML tree construction algorithm speculatively. The upside is that when a speculation succeeds, there's no need to reparse the part of the incoming file that was already scanned for scripts, style sheets and images. The downside is that there's more work lost when the speculation fails.
190 Using the application cache Advanced, App, Cache, Guide, HTML, appcache, application cache, web cache
HTML5 provides an application caching mechanism that lets web-based applications run offline. Developers can use the Application Cache (AppCache) interface to specify resources that the browser should cache and make available to offline users. Applications that are cached load and work correctly even if users click the refresh button when they are offline.

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