Source string (Built-in English) <a href='https://www.metatags.org/meta_http_equiv_set_cookie'>Sets a cookie</a> on the visitor's browser. Can be in either NAME=VALUE format, or a more verbose format including the path and expiration date; see the link for full details on the syntax.
Source string (Built-in English) Tell search engines when to index the page again. Very few search engines support this tag, it is more useful to use an <a href='https://www.drupal.org/project/xmlsitemap'>XML Sitemap</a> file.
Source string (Built-in English) Used to control whether a browser caches a specific page locally. Not commonly used. Should be used in conjunction with the Pragma meta tag.
Source string (Built-in English) Control when the browser's internal cache of the current page should expire. The date must to be an <a href='https://www.csgnetwork.com/timerfc1123calc.html'>RFC-1123</a>-compliant date string that is represented in Greenwich Mean Time (GMT), e.g. 'Thu, 01 Sep 2016 00:12:56 GMT'. Set to '0' to stop the page being cached entirely.
Source string (Built-in English) Used to control whether a browser caches a specific page locally. Not commonly used. Should be used in conjunction with the Cache-Control meta tag.
Source string (Built-in English) Meta tags that might not be needed by many sites.
Source string (Built-in English) The word that appears before the content's title in a sentence. The default ignores this value, the 'Automatic' value should be sufficient if this is actually needed.
Source string (Built-in English) A human-readable name for the site, e.g., <em>IMDb</em>.
Source string (Built-in English) The type of the content, e.g., <em>movie</em>.
Source string (Built-in English) Preferred page location or URL to help eliminate duplicate content for search engines, e.g., <em>https://www.imdb.com/title/tt0117500/</em>.
Source string (Built-in English) The title of the content, e.g., <em>The Rock</em>.
Source string (Built-in English) A one to two sentence description of the content.
Source string (Built-in English) The type of image referenced above. Should be either 'image/gif' for a GIF image, 'image/jpeg' for a JPG/JPEG image, or 'image/png' for a PNG image. Note: there should be one value for each image, and having more than there are images may cause problems.
Source string (Built-in English) The type of video referenced above. Should be either video.episode, video.movie, video.other, and video.tv_show. Note: there should be one value for each video, and having more than there are videos may cause problems.
Source string (Built-in English) The width of the above image(s). Note: if both the unsecured and secured images are provided, they should both be the same size.
Source string (Built-in English) The height of the above video(s). Note: if both the unsecured and secured videos are provided, they should both be the same size.
Source string (Built-in English) The height of the above image(s). Note: if both the unsecured and secured images are provided, they should both be the same size.
Source string (Built-in English) A description of what is in the image, not a caption. If the page specifies an og:image it should specify og:image:alt.
Source string (Built-in English) The date this content was last modified, with an optional time value. Needs to be in <a href='https://en.wikipedia.org/wiki/ISO_8601'>ISO 8601</a> format. Can be the same as the 'Article modification date' tag.
Source string (Built-in English) The length of the video in seconds
Source string (Built-in English)
Source string (Built-in English) URLs to related content
Source string (Built-in English) The locale these tags are marked up in, must be in the format language_TERRITORY. Default is 'en_US'.
Source string (Built-in English) Links an article to a publisher's Facebook page.
Source string (Built-in English) The primary section of this website the content belongs to.
Source string (Built-in English) The date this content was published on, with an optional time value. Needs to be in <a href='https://en.wikipedia.org/wiki/ISO_8601'>ISO 8601</a> format.
Source string (Built-in English) The date this content was last modified, with an optional time value. Needs to be in <a href='https://en.wikipedia.org/wiki/ISO_8601'>ISO 8601</a> format.
Source string (Built-in English) The date this content will expire, with an optional time value. Needs to be in <a href='https://en.wikipedia.org/wiki/ISO_8601'>ISO 8601</a> format.
Source string (Built-in English) The Book's ISBN
Source string (Built-in English) The date the book was released.