Defines how a page looks based on the color scheme choosen by the user for their desktop.
Contains language specific links.
Public specification of a preferred URL for a page allows search engines to understand the original location for content.
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook
The DOCTYPE is a required preamble for HTML5 websites.
Defines the attributes of a web app in a simple JSON file. It describes how the web app should appear on the users system and how it should launch.
The @font-face rule allows for linking to fonts that are automatically activated when needed.
A way to make Web content and Web applications more accessible to people with disabilities. It especially helps with dynamic content and advanced user interface controls developed with Ajax, HTML, JavaScript, and related technologies.
This page contains tags that are specific to an HTML 5 implementation.
The page shows content with an iframe; an embedded frame that loads another webpage.
JavaScript is a scripting language most often used for client-side web development.
The description attribute provides a concise explanation of the page content.
Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML
JSON-LD, or JavaScript Object Notation for Linked Data, is a method of transporting Linked Data using JSON.