HTML

It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript.

Alongside HTML and CSS, JavaScript is one of the core technologies of the World Wide Web.

HTML elements are the building blocks of HTML pages.

An HTML element is an individual component of an HTML (Hypertext Markup Language) document or web page.

Web browsers receive HTML documents from a web server or from local storage and render the documents into multimedia web pages.

The primary job of a browser engine is to transform HTML documents and other resources of a web page into an interactive visual representation on a user's device.

Web browsers receive HTML documents from a web server or from local storage and render the documents into multimedia web pages.

Pages delivered are most frequently HTML documents, which may include images, style sheets and scripts in addition to the text content.

Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. HTML is a markup language that web browsers use to interpret and compose text, images, and other material into visual or audible web pages.

Some markup languages, such as the widely used HTML, have pre-defined presentation semantics—meaning that their specification prescribes generally how to present the structured data on particular media.

HTML elements are delineated by tags, written using angle brackets.

In HTML, chevrons (greater and less than symbols) are used to bracket meta text.

In 1989, Berners-Lee wrote a memo proposing an Internet-based hypertext system.

Hypertext is one of the key underlying concepts of the World Wide Web, where Web pages are often written in the Hypertext Markup Language (HTML).

In 1989, Berners-Lee wrote a memo proposing an Internet-based hypertext system.

By Christmas 1990, Berners-Lee had built all the tools necessary for a working Web: the HyperText Transfer Protocol (HTTP) 0.9, the HyperText Markup Language (HTML), the first Web browser (which was also a HTML editor and could access Usenet newsgroups and FTP files), the first HTTP server software (later known as CERN httpd), the first web server, and the first Web pages that described the project itself.

Similarly, Dave Raggett's competing Internet-Draft, "HTML+ (Hypertext Markup Format)", from late 1993, suggested standardizing already-implemented features like tables and fill-out forms.

He has been a W3C Fellow at the World Wide Web Consortium since 1995 and worked on many of the key web protocols, including HTTP, HTML, XHTML, MathML, XForms, and VoiceXML.

Except for the hyperlink tag, these were strongly influenced by SGMLguid, an in-house Standard Generalized Markup Language (SGML)-based documentation format at CERN.

It served as a model of the earliest HTML specifications.

Web browsers receive HTML documents from a web server or from local storage and render the documents into multimedia web pages. Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. HTML is a markup language that web browsers use to interpret and compose text, images, and other material into visual or audible web pages.

In terms of technology, browsers have greatly expanded their HTML, CSS, JavaScript, and multimedia capabilities since the 1990s.

HTML provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items.

One very widely used representation for structured documents is HTML, a schema defined and described by the W3C.

The marquee tag is a non-standard HTML element which causes text to scroll up, down, left or right automatically.

As a testbed browser, Arena was used in testing the implementation for HTML version 3.0, Cascading Style Sheets (CSS), Portable Network Graphics (PNG), and libwww.

Except for the hyperlink tag, these were strongly influenced by SGMLguid, an in-house Standard Generalized Markup Language (SGML)-based documentation format at CERN.

HTML was theoretically an example of an SGML-based language until HTML 5, which browsers cannot parse as SGML for compatibility reasons.

In HTML, a frameset is a group of named frames to which web pages and media can be directed; an iframe provides for a frame to be placed inside the body of a document.

HTML5 does not define a DTD; therefore, in HTML5 the doctype declaration is simpler and shorter:

HTML5 is the fifth and current major version of HTML, and subsumes XHTML.

It was formally defined as such by the Internet Engineering Task Force (IETF) with the mid-1993 publication of the first proposal for an HTML specification, the "Hypertext Markup Language (HTML)" Internet Draft by Berners-Lee and Dan Connolly, which included an SGML Document type definition to define the grammar.

Soon after he started advocating for HTML to adopt an SGML document type definition.

HTML is a markup language that web browsers use to interpret and compose text, images, and other material into visual or audible web pages.

The descendants of these text markup languages include SGML, XML and HTML.

Syntax of the blink element type is identical to such standard HTML inline elements as span.

Presentational markup tags are deprecated in current HTML and XHTML recommendations.

A microformat (sometimes abbreviated μF) is a World Wide Web-based approach to semantic markup which uses HTML/XHTML tags supported for other purposes to convey additional metadata and other attributes in web pages and other contexts that support (X)HTML, such as RSS.

So for example, XHTML 1.1 will allow quicker migration to emerging XML standards such as MathML (a presentational and semantic math language based on XML) and XForms—a new highly advanced web-form technology to replace the existing HTML forms.

Often, MathML will be embedded in more general documents, such as HTML, DocBook, or other XML schemas.

As of version 4.0, HTML defines a set of 252 character entity references and a set of 1,114,050 numeric character references, both of which allow individual characters to be written via simple markup, rather than literally.

A numeric character reference (NCR) is a common markup construct used in SGML and SGML-derived markup languages such as HTML and XML.

The result is still invalid markup, which makes the document less accessible to other browsers and to other user agents that may try to parse the document for search and indexing purposes for example.

Crawlers can validate hyperlinks and HTML code.