MetaExtensions

About MetaTags

The <meta> tag defines metadata about a HTML document. Metadata is data (information) about other data (in case of HTML information about the HTML-document).

<meta>-tags are always placed in the <head>-section of a HTML document and are used to specify metadata about a page, such as the charset (most likely UTF-8), a page description or the pages author.

Metadata can also be used to verify page-ownership (prominently used by Google as google-site-verification), or to en- or disable certain functions of a browser.

Metadata is not displayed on the page itself, and is therefore not intended for the end-user, but is machine parsable.

That means that

Examples for MetaTags

<meta>-tags may look something like this in your <head> section:

<meta charset="UTF-8">
<meta http-equiv="language" content="en">
<meta name="description" content="JokeNetworks FAQ">
<meta name="keywords" content="Documentation, FAQ, MetaTags, HTML, WHATWG">
<meta name="author" content="JokeNetwork">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="robots" content="noindex,nofollow">
<meta name="revisit" content="10 days">
<meta http-equiv="refresh" content="10">
<meta http-equiv="refresh" content="5;url=https://faq.jokenetwork.de">

Using MetaTags for SEO

Some <meta>-tags are relevant for search engine optimazation.

A full overview over MetaTags which are understood by Google and other search engines is listed on a Google Search Central Page.

⚠️ Please note:
While name="keywords" is marked as Deprecated and is therefore not relevant anymore,
name="description" is not fully ignored by search enginges, but Google encourages you to put more effort into your pages content instead of describing it through the description-extension.

Reference

Read more about MetaTags at W3Schools or at Google Search Central.

About MetaExtensions

Meta Extensions are extension values for the name="" attribute of the HTML <meta> element and are the main subject of the Docs at faq.jokenetwork.de.

The name=""attributes for the <meta>-tags should be well documented to be understood by everyone and listed as "Proposal" in the WHATWG Wiki.

Also, if they should not be marked as an error in the W3 Validator, they have to be added from the WHATWG Wiki to the Validator.

Learn more about adding a MetaExtension to the WHATWG Wiki and to the W3 Validator here: Contribute.

Reference

Read more about MetaExtensions at the WHATWG Wiki.

W3

In the WHATWG Wiki

Up to date: v2.3.3