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Meta elements can be used to specify page description, keywords and any other metadata not provided through the other head elements and attributes. [1] The meta element has two uses: either to emulate the use of an HTTP response header field, or to embed additional metadata within the HTML document. With HTML up to and including HTML 4.01 and ...
The Dublin Core vocabulary, also known as the Dublin Core Metadata Terms (DCMT), is a general purpose metadata vocabulary for describing resources of any type. It was first developed for describing web content in the early days of the World Wide Web. The Dublin Core Metadata Initiative (DCMI) is responsible for maintaining the Dublin Core ...
HTML markup consists of several key components, including those called tags (and their attributes), character-based data types, character references and entity references. HTML tags most commonly come in pairs like < h1 > and </ h1 >, although some represent empty elements and so are unpaired, for example < img >.
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.
The meta tag must be placed in the "head" section of the HTML file. The number "0" in this example may be replaced by another number to achieve a delay of that many seconds. The anchor in the "body" section is for users whose browsers do not support this feature. The same effect can be achieved with an HTTP refresh header:
Example 1: Vary: * Example 2: Vary: Accept-Language; Permanent RFC 9110: Via: Informs the client of proxies through which the response was sent. Via: 1.0 fred, 1.1 example.com (Apache/1.1) Permanent RFC 9110: Warning: A general warning about possible problems with the entity body. Warning: 199 Miscellaneous warning: Obsolete [21] RFC 7234, 9111 ...
Meta refresh is a method of instructing a web browser to automatically refresh the current web page or frame after a given time interval, using an HTML meta element with the http-equiv parameter set to "refresh" and a content parameter giving the time interval in seconds.
The example above shows a notation named "type-image-svg" that references the standard public FPI and the system identifier (the standard URI) of an SVG 1.1 document, instead of specifying just a system identifier as in the first example (which was a relative URI interpreted locally as a MIME type).