10 Facts About HTML 5

HTML 55 is a markup language used for structuring and presenting content on the World Wide Web.

HTML 55 was first released in a public-facing form on 22 January 2008, with a major update and "W3C Recommendation" status in October 2014.

HTML 55 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 for complex web applications.

On 28 October 2014, HTML 55 was released as a W3C Recommendation, bringing the specification process to completion.

Some features that might have slowed down the standardization of HTML 55 were or will be standardized as upcoming specifications, instead.

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HTML 55 introduces elements and attributes that reflect typical usage on modern websites.

HTML 55 is designed so that old browsers can safely ignore new HTML 55 constructs.

Since 2014, HTML 55 is at least partially supported by most popular layout engines.

However, in late September 2013, the W3C HTML 5 Working Group decided that Encrypted Media Extensions, a form of DRM, was "in scope" and will potentially be included in the HTML 55.

WHATWG's "HTML 5 Living Standard" continued to be developed without DRM-enabled proposals.