Image of HTML5

HTML5

Technology

A web technology that early Facebook heavily bet on over native mobile apps before pivoting.


First Mentioned

6/8/2026, 2:49:41 AM

Last Updated

6/8/2026, 2:56:10 AM

Research Retrieved

6/8/2026, 2:56:10 AM

Summary

HTML5 (Hypertext Markup Language 5) is a major revision of the core language of the World Wide Web, designed to structure and present content natively without the need for proprietary plugins. First released in a public-facing form in 2008 and reaching W3C Recommendation status in 2014, HTML5 introduced powerful features like native audio/video playback, the canvas element, and semantic page structures. While highly versatile for cross-platform development, its early adoption for mobile applications faced challenges. Notably, Facebook's Mark Zuckerberg, influenced by internal debates with Brett Taylor, took a costly detour by relying on HTML5 instead of building native mobile apps. Today, the specification has transitioned to the HTML Living Standard, maintained by the Web Hypertext Application Technology Working Group (WHATWG).

Research Data
Extracted Attributes
  • Type

    Markup language

  • Full Name

    Hypertext Markup Language 5

  • Key Features

    Native multimedia (<video>, <audio>), graphics (<canvas>), semantic elements, and offline storage APIs

  • Inception/Recommendation Date

    2014-10-28

Timeline
  • HTML5 is first released in a public-facing form. (Source: Wikipedia)

    2008-01-22

  • HTML5 achieves official 'W3C Recommendation' status, marking a major update. (Source: Wikidata)

    2014-10-28

HTML5

HTML5 (Hypertext Markup Language 5) is a markup language used for structuring and presenting hypertext documents on the World Wide Web. It was the fifth and final major HTML version that is now a retired World Wide Web Consortium (W3C) recommendation. The current specification is known as the HTML Living Standard. It is maintained by the Web Hypertext Application Technology Working Group (WHATWG), a consortium of the major browser vendors (Apple, Google, Mozilla, and Microsoft). HTML5 was first released in a public-facing form on 22 January 2008, with a major update and "W3C Recommendation" status in October 2014. Its goals were to improve the language with support for the latest multimedia and other new features; to keep the language both easily readable by humans and consistently understood by computers and devices such as web browsers, parsers, etc., without XHTML's rigidity; and to remain backward-compatible with older software. HTML5 is intended to subsume not only HTML 4 but also XHTML1 and even the DOM Level 2 HTML itself. HTML5 includes detailed processing models to encourage more interoperable implementations; it extends, improves, and rationalizes the markup available for documents and introduces markup and application programming interfaces (APIs) for complex web applications. For the same reasons, HTML5 is also a candidate for cross-platform mobile applications because it includes features designed with low-powered devices in mind. Many new syntactic features are included. To natively include and handle multimedia and graphical content, the new <video>, <audio> and <canvas> elements were added; expandable sections are natively implemented through <summary>...</summary> and <details>...</details> rather than depending on CSS or JavaScript; and support for scalable vector graphics (SVG) content and MathML for mathematical formulas was also added. To enrich the semantic content of documents, new page structure elements such as <main>, <section>, <article>, <header>, <footer>, <aside>, <nav>, and <figure> are added. New attributes were introduced, some elements and attributes were removed, and others such as <a>, <cite>, and <menu> were changed, redefined, or standardized. The APIs and Document Object Model (DOM) are now fundamental parts of the HTML5 specification, and HTML5 also better defines the processing for any invalid documents.

Web Search Results
  • HTML5: What's New in The Latest Version of HTML?

    ## What is HTML5? HTML5 is the latest specification of the HTML language, and represented a major break with previous markup practices. The purpose of the profound changes to the language was to standardize the many new ways in which developers were using it, as well as to encourage a single set of best practices with regards to web development. Most of the individual changes are a result of larger objectives in the design of the language. These objectives primarily include: Getting a handle on HTML5 isn’t just about learning which CSS features replace old HTML features. If you want to get an intuitive sense of HTML5, it is best to understand how these objectives affected the development of the language. ### Encouraging Semantic Markup [...] When people first started adding these types of experiences to web pages, they required users to add special plugins to their browsers. These performed poorly, limited user options, and opened up security holes. They required developers to write core web page functionality in other languages like Flash or Java. The content was hidden from search engines and screen readers. It was a mess. Now, HTML5 provides support for media with elements like `<video>` and `<audio>`, while `<canvas>` provides a defined space for JavaScript-created drawing and graphics. New form elements, along with better integration between HTML5, CSS, and JavaScript has made it possible to create full-scale web applications using the three languages that are native to the web browser, without plugins or add-ons. [...] You probably already know that HTML, or HyperText Markup Language, is the language used for web documents. It is not a programming language, but rather a language that identifies the meaning, purpose, and structure of text within a document. For example, consider this document: # All About Rats ## Why Do Rats Make Great Pets? Forget what you’ve learned from horror films, rats make great pets — especially for children. And unlike the popular hamster, they almost never bite.

  • What’s New in HTML5 and How It’s Shaping Web Design

    ### How HTML5 is Shaping Web Design HTML5 is changing the way designers approach web design. With its emphasis on simplicity, accessibility, and multimedia integration, HTML5 enables the creation of more engaging, interactive, and user-friendly websites. By replacing outdated technologies like Flash with native support for multimedia, HTML5 helps streamline web development and make websites faster and more reliable. Moreover, HTML5 has introduced a more flexible and modular approach to web design. Developers can now focus on creating rich user experiences without worrying about cross-browser compatibility or the need for third-party plugins. This has led to more innovative and creative design solutions that provide users with a seamless experience across devices and platforms. [...] 8. Responsive Web Design HTML5 has made responsive design more accessible by integrating well with CSS3 media queries. This allows websites to adapt seamlessly to different screen sizes and devices, from desktop computers to smartphones and tablets. The result is a more consistent user experience, as websites automatically adjust their layout and content based on the user's device. 9. Microdata for Structured Data HTML5 introduces microdata, which allows developers to embed machine-readable information within the webpage. This makes it easier for search engines and other systems to understand the content and context of a page. By using microdata, developers can enhance the searchability of their pages and create richer search results with features like rich snippets. [...] What’s New in HTML5 and How It’s Shaping Web Design HTML5 has become the backbone of modern web design, revolutionizing how websites are built and interacted with. Since its launch, HTML5 has brought a host of powerful features, enabling developers and designers to create richer, more engaging, and more accessible websites. With advancements in multimedia support, responsive design, and user experience, HTML5 continues to shape the future of web development. Exploring a career in Web Development? Apply now! In this article, we will explore what’s new in HTML5, its key features, and how it’s influencing the landscape of web design. ### Introduction to HTML5: The Evolution of Web Design

  • A Beginner's Guide to HTML5

    ## What is HTML5? HTML5 is the newest version of HTML. The term refers to two things. One is the updated HTML language itself, which has new elements and attributes. The second is the larger set of technologies that work with this new version of HTML — like a new video format — and enable you to build more complex and powerful websites and apps. To understand how HTML has evolved over the years, let’s look at the differences between HTML and HTML5. ### Free Guide: 25 HTML & CSS Coding Hacks Tangible tips and coding templates from experts to help you code better and faster. ## Download Free All fields are required. Form not available ### You're all set! Click this link to access this resource at any time. ## HTML vs HTML5 [...] ## Why HTML5? HTML5 offers a wide range of benefits over previous versions of HTML — some of which we’ve mentioned briefly above. Let’s take a closer look at just a few reasons why HTML5 is so special. ### It’s compatible across browsers. HTML5 is supported by all the major browsers, including Chrome, Firefox, Safari, Opera, as well as iOS for Chrome and Safari and Android browsers. It can even work with the older and less popular browsers like Internet Explorer. That means when building with HTML5, you know that users will have a consistent experience on your site, no matter what browser they use or whether they’re on mobile or desktop. ### It enables offline browsing. [...] Cue, HTML5. HTML5 was designed to cut out the need for those non-standard proprietary technologies. With this new version of HTML, you can create web applications that work offline, support high-definition video and animations, and know where you are geographically located. To understand how HTML5 can do all that, let’s look at what’s new in this latest version of HTML. ## What is new in HTML5? HTML5 was designed with major objectives, including: Each of these objectives informed the changes in this new version of HTML. Let’s focus on seven of those changes below. ### New Semantic Elements

  • Top HTML5 Features for Improving Web Apps

    The W3C states that: “HTML (Hypertext Markup Language) was primarily designed as a language for semantically describing scientific documents, although its general design and adaptations over the years have enabled it to be used to describe a number of other types of documents.” This actually means that HTML was not created to target the vague subject commonly referred to as Web Applications. The 5th major version of HTML (aka HTML5) introduces new features, ranging from CSS3 (related technology) to GeoLocation and WebStorage that mainly target Web Applications. HTML5 is not one big thing but a collection of individual features. This actually means two things: The image below gives a small idea of what might be added in the near future. HTML5 taxonomy and status - top html5 features [...] With HTML5, web pages can store data locally within the user's browser. Earlier, this was done with cookies. However, web storage is more secure and faster. Persistent local storage is one area where native client applications have held an advantage over web applications. For native applications, the operating system typically provides an abstraction layer for storing and retrieving application-specific data like preferences or runtime state. Simply put, it’s a way for web pages to store named key/value pairs locally within the client web browser. Like cookies, this data persists even after a user navigates away from the web site, closes a browser tab, or exits a browser, etc. Unlike cookies, this data is never transmitted to the remote web server (unless sent manually). Unlike all [...] ### 5. App Cache The cache manifest in HTML5 is a software storage feature which provides the ability to access a web application even without a network connection. As is well described in Dive Into HTML5:

  • HTML5

    ## Abstract This specification defines the 5th major revision of the core language of the World Wide Web: the Hypertext Markup Language (HTML). In this version, new features are introduced to help Web application authors, new elements are introduced based on research into prevailing authoring practices, and special attention has been given to defining clear conformance criteria for user agents in an effort to improve interoperability. ## Status of This document This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the most recently formally published revision of this technical report can be found in the W3C technical reports index at [...] `meta` `id` `title` `lang` `xml:lang` `xml:base` `dir` `class` `style` `data-` `document.write()` `document.writeln()` `innerHTML` `outerHTML` `insertAdjacentHTML()` `html` `head` `title` `base` `link` `meta` `style` `script` `script` `script` `noscript` `body` `section` `nav` `article` `aside` `h1` `h2` `h3` `h4` `h5` `h6` `hgroup` `header` `footer` `address` `p` `hr` `pre` `blockquote` `ol` `ul` `li` `dl` `dt` `dd` `figure` `figcaption` `div` `a` `em` `strong` `small` `s` `cite` `q` `dfn` `abbr` `time` `code` `var` `samp` `kbd` `sub` `sup` `i` `b` `u` `mark` `ruby` `rt` `rp` `bdi` `bdo` `span` `br` `wbr` `ins` `del` `ins` `del` `img` `iframe` `embed` `object` `param` `video` `audio` `source` `track` `TrackList` `canvas` `canvas` `map` `area` `table` `caption` `colgroup` `col` `tbody`

  • Image
    Wikidata Preview
  • Instance Of
  • Inception Date
    10/28/2014