MetaExtensions

This page lists extension values for the name="" attribute of the HTML <meta> element. You may add your own values to this list.

For assistance in preparing a specification, see the specification editing category and the Bikeshed documentation.

If the specification is ready, we ask that you:

• Avoid redundancy. If someone has already defined a name that does roughly what you want, please reuse it.
• Be sure to include all the items outlined in the spec including a link to a specification that specifies the keyword as an HTML meta keyword. If a proposal lacks a specification and a version in a complete specification exists, the latter is to be preferred.
• Alphabetize by keyword, without regard for case, in any table. Sort nonalphanumerics by ASCII value.
• Not reserve namespaces. Instead, register individual names (known as enumerated values although you don't have to number them).

URL-valued attributes must not be added to this page as meta names but should be registered as rel keywords instead.

Meta Name Extensions

Keyword	Brief description	Link to specification	Synonyms	Status
AGLSTERMS.accessibility	A statement indicating the accessibility characteristics of the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.accessMode	Perceptual mode for the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.act	A specific piece of legislation which requires or drives the creation or provision of the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.aggregationLevel	The level of aggregation of the described resource - an 'item' or a 'collection'.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.allow-search	A specific piece of legislation which requires or drives the creation or provision of the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.availability	How the resource can be obtained or accessed, or contact information. Primarily used for offline resources to provide information on how to obtain physical access to the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.case	A specific piece of case law which requires or drives the creation or provision of the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.category	The generic type of the resource being described - a 'service', 'document' or 'agency'.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.dateLicensed	Date a license was applied or became effective.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.documentType	The form of the described resource where the value of category is‘document’. Document is used in its widest sense and includes resources such as text, images, sound files and software.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.function	The business function to which the resource relates. Functions are the major units of activity which organisations pursue in order to meet the mission and goals of the organisation.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.isBasedOn	A related resource of which the described resource is a performance, production, derivation, translation or interpretation.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.isBasisFor	A related resource that is a performance, production, derivation, translation or interpretation of the described resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.jurisdiction	The name of the political/administrative entity covered by the described resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.mandate	A specific legal instrument which requires or drives the creation or provision of the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.protectiveMarking	A protective marking applied to the described resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.regulation	A specific regulation which requires or drives the creation or provision of the resource.	AGLS Metadata Usage Guide		Proposal
AGLSTERMS.serviceType	The form of the described resource where the value of category is ‘service'.	AGLS Metadata Usage Guide		Proposal
alexaverifyid	Used to verify ownership of Alexa Search	Alexa FAQ About this meta attribute Reference		Proposal
apple-itunes-app	Promoting Apps with Smart App Banners	Safari Web Content Guide		Proposal
apple-mobile-web-app-capable	Sets whether a web application runs in full-screen mode.	Apple Safari HTML Reference	mobile-web-app-capable (also could maybe be assumed when application-name is set?)	Proposal
apple-mobile-web-app-status-bar-style	Sets the style of the status bar for a web application.	Apple Safari HTML Reference		Proposal
apple-mobile-web-app-title	Sets the title of the application when added to the homescreen on iOS6+	Unofficial Documentation of apple-mobile-web-app-title - Read more about Apple's web-app's at Apple Safari HTML Reference		Proposal
apple-touch-fullscreen	forces iPhone Fullscreen mode, if added to home screen. Not needed anymore.	No specification yet		Proposal
application-name	For Windows 7: "[D]efines the name of the Pinned site application instance. This is the name that appears in a tooltip when hovering over the Pinned site button on the Windows 7 taskbar. The application name is also appended to the window title of the Pinned site application instance." Although the documentation refers to an application, it gives an example of writing this metadata for HTML. Indeed, this name must not be used except in a Web application, according to HTML Living Standard and HTML 5.1.	Declaring Pinned Site Metadata (Microsoft Developer Network)		Proposed
application-url	Start URL of web apps in Google Chrome The "application-url" meta tag can be used to specify the start URL of pinned web apps in Google Chrome. <meta name="application-url" content="https://gmail.com/">	Google Chrome Webmaster FAQ Chromium issue response		Proposal
appstore:bundle_id	Application bundle identifier or package identifier, used to identify applications on platforms and within some app stores. Usage: <meta name="appstore:bundle_id" content="com.example.myapp">	IAB Tech Lab app-ads.txt documentation: https://iabtechlab.com/ads-txt/		Proposal
appstore:developer_url	The consumer-visible URL published as developer contact details within an app store listing for an app. Usage: <meta name="appstore:developer_url" content="https://www.path.to/page">	IAB Tech Lab app-ads.txt documentation: https://iabtechlab.com/ads-txt/		Proposal
appstore:store_id	An app store specific identifier representing the stock keeping unit (SKU) or another identifier used to locate the app within the store. Usage: <meta name="appstore:store_id" content="SKU12345">	IAB Tech Lab app-ads.txt documentation: https://iabtechlab.com/ads-txt/		Proposal
audience	Categorize the principal intended audience for the page, generally with a controlled vocabulary. Google uses this tag: Custom Search Help, as accessed Jan. 8, 2016.	BrittleBit.org spec		Proposal
bitcoin	A bitcoin-address	Short documentation (unofficial): FrontendNetworks unofficial documentation for bitcoin-metatag, more informations about the Bitcoin-adress: Bitcoin wiki		Proposal
blazerr-secure	Decides whether connect via a secure connection or not to JokeNetwork's Blazerr-System. Synonym to blazerr-ssl, but only for old browsers such as Internet Explorer 7. Usage: <meta name="blazerr-secure" content="yes">	JokeNetwork's Blazerr Documentation		Proposal
blazerr-seo	Checks whether Blazerr SEO has been used or not. It contains the user-id and the SEO Version. Usage: <meta name="blazerr-seo" content="0001;v0.7"> 0001 is an example for a user id, v0.7 identifies which version of SEO is used (In this case version Beta 7 / 0.7). If you're using Blazerr SEO, you have to include this meta-tag. Otherwise the tool will not work.	JokeNetwork's Blazerr Documentation		Proposal
blazerr-ssl	Decides whether connect via a secure connection or not to JokeNetwork's Blazerr-System. Similar to blazerr-secure. Usage: <meta name="blazerr-ssl" content="yes">	JokeNetwork's Blazerr Documentation	blazerr-secure is partial synonym (see that entry)	Proposal
blazerr-support-id-noncookies	Used to identify users for JokeNetwork's Blazerr Support-System without a cookie. Deprecated.	JokeNetwork's Blazerr Documentation		Proposal
blazerr-support-identifier	Used to identify users for JokeNetwork's Blazerr Support-System along with a cookie. The verification of a user without the use of cookies can be obtained with the deprecated meta tag blazerr-support-id-noncookies.	JokeNetwork's Blazerr Documentation		Proposal
bug.blocked	Bugzilla dependency tree to which the https://dvcs.w3.org/hg/webcomponents/raw-file/default/assets/scripts/bug-assist.js bug-creation script will add a link.	Embedded documentation		Proposal
bug.comment	Bugzilla comment used by the https://dvcs.w3.org/hg/webcomponents/raw-file/default/assets/scripts/bug-assist.js bug-creation script.	Embedded documentation		Proposal
bug.component	Bugzilla component against which the https://dvcs.w3.org/hg/webcomponents/raw-file/default/assets/scripts/bug-assist.js bug-creation script will create a new bug.	Embedded documentation		Proposal
bug.product	Bugzilla product against which the https://dvcs.w3.org/hg/webcomponents/raw-file/default/assets/scripts/bug-assist.js bug-creation script will create a new bug.	Embedded documentation		Proposal
bug.short_desc	Bugzilla short description used by the https://dvcs.w3.org/hg/webcomponents/raw-file/default/assets/scripts/bug-assist.js bug-creation script.	Embedded documentation		Proposal
cfia.gdr.activity	Canadian Food Inspection Agency Guidance Document Repository Page Activity	Coming soon at CFIA website		Proposal
cfia.gdr.commodity	Canadian Food Inspection Agency Guidance Document Repository Page Commodity	Coming soon at CFIA website		Proposal
cfia.gdr.include	Canadian Food Inspection Agency Guidance Document Repository Page	Coming soon at CFIA website		Proposal
cfia.gdr.program	Canadian Food Inspection Agency Guidance Document Repository Page Program	Coming soon at CFIA website		Proposal
citation_author	The name of an author of an academic paper	Google Scholar indexing documentation		Proposal
citation_author_email	The email address of the preceding author (identified using citation_author) of an academic paper			Proposal
citation_author_institution	The name of an institution to which the preceding author (identified using citation_author) of an academic paper is affiliated			Proposal
citation_conference_title	The title of the conference at which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_date	The publication date of an academic paper			Proposal
citation_dissertation_institution	The name of the institution which published an academic dissertation	Google Scholar indexing documentation		Proposal
citation_doi	The Digital Object Identifier of an academic paper			Proposal
citation_firstpage	The first page of the journal in which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_fulltext_html_url	The URL of the full text HTML version of an academic paper			Proposal
citation_isbn	The ISBN of the book in which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_issn	The ISSN of the journal in which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_issue	The issue of the journal in which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_journal_abbrev	The abbreviated title of the journal in which an academic paper is published			Proposal
citation_journal_title	The title of the journal in which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_keywords	A semicolon-separated list of keywords associated with an academic paper			Proposal
citation_language	The language in which an academic paper is written, as an ISO 639-1 two-letter code			Proposal
citation_lastpage	The last page of the journal in which an academic paper is published	Google Scholar indexing documentation		Proposal
citation_pdf_url	The URL of a PDF version of an academic paper	Google Scholar indexing documentation		Proposal
citation_publication_date	The publication date of an academic paper	Google Scholar indexing documentation		Proposal
citation_publisher	The name of the publisher of an academic paper	The spec (as accessed 11-26-17) omits this meta name but refers to the meta name DC.publisher (see that on this page).		Proposal
citation_technical_report_institution	The name of the institution which published an academic technical report or preprint	Google Scholar indexing documentation		Proposal
citation_technical_report_number	The identification number of an academic technical report or preprint	Google Scholar indexing documentation		Proposal
citation_title	The title of an academic paper	Google Scholar indexing documentation		Proposal
citation_volume	The volume of the journal in which an academic paper is published	Google Scholar indexing documentation		Proposal
collection	To replace the obsolete dc:collection. A collection is described as a group, an aggregation of topics Used to describe the top-level content of XHTML documents. These appear in your META tags showing a group of subject. Website Taxonomy improve classification for search engine analysis and semantic communication with a description language content. <meta name="collection" content="MetaExtensions" /> <meta name="subject" content="topics, thesaurus, Meta Tag, header, semantic" />	[1]		Proposal
contact	Defines the vendor's contact information by way of a phone-number (such as the customer support number), an e-mail ID (such as the customer support mail ID) or a physical address (such as the office address or billing address). Usage: <meta name="contact" content="+1-555-555-5555 [email protected] '5844 South Oak Street, Chicago, Illinois'"> or in case of multiple entries: <meta name="contact" content="Chicago: +1-555-555-5555 [email protected] '5844 South Oak Street, Chicago, Illinois'; Brookfield: +1-444-444-4444 [email protected] '2341 Cherry Lane, Brookfield, Illinois'"> The content attribute is a space separated string containing the phone-number followed by the e-mail ID and then the address (specified within quotes). For specifying multiple entries a semi-colon separated list of name: value pairs can be defined. The name can be any descriptive tag identifying the given location. Valid phone numbers and mail IDs should be provided by the vendor. The address can either be a string specified within quotes or the latitude and longtitude coordinates.	Documentation		Proposal
creator	Identify the creator of the page’s content, the content generally being the principal part of what info is rendered for website visitors.	BrittleBit.org spec		Proposal
csrf-param	Cross-site request forgery protection parameter for Ruby on Rails	Rails API		Proposal
csrf-token	Cross-site request forgery protection token for Ruby on Rails	Rails API		Proposal
da_anonymiseIP	Defines anonymiseIP parameter for Decibel Insight	Documentation		Proposal
da_contactCompany	Defines the contactCompany of the page for Decibel Insight	Documentation		Proposal
da_contactEmail	Defines the contactEmail of the page for Decibel Insight	Documentation		Proposal
da_contactFirstName	Defines the contactFirstName of the page for Decibel Insight	Documentation		Proposal
da_contactLastName	Defines the contactLastName of the page for Decibel Insight	Documentation		Proposal
da_contactName	Defines the contactName of the page for Decibel Insight	Documentation		Proposal
da_contactTelephone	Defines the contactTelephone of the page for Decibel Insight	Documentation		Proposal
da_conversionCurrency	Defines the conversionCurrency of the page for Decibel Insight	Documentation		Proposal
da_conversionId	Defines the conversionId of the page for Decibel Insight	Documentation		Proposal
da_conversionValue	Defines the conversionValue of the page for Decibel Insight	Documentation		Proposal
da_goalCurrency	Defines the goalCurrency of the page for Decibel Insight	Documentation		Proposal
da_goalId	Defines the goalId of the page for Decibel Insight	Documentation		Proposal
da_goalValue	Defines the goalValue of the page for Decibel Insight	Documentation		Proposal
da_interactionSelector	Defines the interactionSelector parameter for Decibel Insight	Documentation		Proposal
da_pageRole	Defines the role of the page for Decibel Insight	Documentation		Proposal
da_pageTaxonomy	Defines the taxonomy of the page for Decibel Insight	Documentation		Proposal
da_pageTitle	Defines the pageTitle of the page for Decibel Insight	Documentation		Proposal
da_pageVersion	Defines the pageVersion of the page for Decibel Insight	Documentation		Proposal
da_sessionId	Defines the sessionId parameter for Decibel Insight	Documentation		Proposal
da_userId	Defines the userId parameter for Decibel Insight	Documentation		Proposal
dc.created	Date of creation of the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.creator	An entity primarily responsible for making the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.date.issued	Date of publication for Google News. The format of the content is YYYY-MM-DD or YYYY-MM-DDThh:mm:ssTZD. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element	Google News documentation	dcterms.issued (former <time pubdate> no longer considered due to the abort of @pubdate)	Proposal
dc.dateCopyrighted	Date of copyright. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.dateSubmitted	Date of submission of the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.description	An account of the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.language	A language of the resource. Recommended best practice is to use a controlled vocabulary such as RFC 4646 [RFC4646]. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	Redundant with the lang attribute on the html element. (Browsers pay attention to the lang attribute but not dc.language)	Proposal
dc.license	A legal document giving official permission to do something with the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.mediator	An entity that mediates access to the resource and for whom the resource is intended or useful. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.medium	The material or physical carrier of the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.modified	Date on which the resource was changed. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.provenance	A statement of any changes in ownership and custody of the resource since its creation that are significant for its authenticity, integrity, and interpretation. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.publisher	An entity responsible for making the resource available. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.references	A related resource that is referenced, cited, or otherwise pointed to by the described resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.temporal	Temporal characteristics of the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.title	A name given to the resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.type	The nature or genre of the resource. Recommended best practice is to use a controlled vocabulary such as the DCMI Type Vocabulary [DCMITYPE]. To describe the file format, physical medium, or dimensions of the resource, use the Format element. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dc.valid	Date (often a range) of validity of a resource. It must be accompanied by a <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
DCS.dcssta	Error page parameter This defines an error code web page so that Webtrends can identify it as a non-success page. Generally used to identify pages that contain 400 and 500 series return codes. As a result, Webtrends excludes these pages from its standard "Pages" report, to instead populate its standard "errors" report. Example: <meta name="DCS.dcssta" content="404">	Webtrends Parameters.		Proposal
dcterms.abstract	A summary of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	[http://dublincore.org/documents/dcmi-terms/#terms-abstract DCMI Metadata Terms] mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	<meta name="description">	Proposal
dcterms.accessRights	Information about who can access the resource or an indication of its security status. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.accrualMethod	The method by which items are added to a collection. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.accrualPeriodicity	The frequency with which items are added to a collection. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.accrualPolicy	The policy governing the addition of items to a collection. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.alternative	An alternative name for the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.audience	A class of entity for whom the resource is intended or useful. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.available	Date (often a range) that the resource became or will become available. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.bibliographicCitation	A bibliographic reference for the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML attribute cite	Proposal
dcterms.collection	An aggregation of resources. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.conformsTo	An established standard to which the described resource conforms. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.contributor	An entity responsible for making contributions to the content of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.coverage	The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.created	Date of creation of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.creator	An entity primarily responsible for making the resource. Examples of a Creator include a person, an organization, or a service. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	In some cases redundant with the HTML built-in keyword author	Proposal
dcterms.date	A point or period of time associated with an event in the lifecycle of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.dateAccepted	Date of acceptance of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.dateCopyrighted	Date of copyright. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.dateSubmitted	Date of submission of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.description	An account of the resource. Description may include but is not limited to: an abstract, a table of contents, a graphical representation, or a free-text account of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	HTML built-in keyword description	Proposal
dcterms.educationLevel	A class of entity, defined in terms of progression through an educational or training context, for which the described resource is intended. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.extent	The size or duration of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.format	The file format, physical medium, or dimensions of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	To be limited to dimensions information. File format for the document is to be determined by server. Linked resources can be described by type attribute.	Proposal
dcterms.hasFormat	A related resource that is substantially the same as the pre-existing described resource, but in another format. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource"	Proposal
dcterms.hasPart	A related resource that is included either physically or logically in the described resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.hasVersion	A related resource that is a version, edition, or adaptation of the described resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource"	Proposal
dcterms.identifier	An unambiguous reference to the resource within a given context. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.instructionalMethod	A process used to engender knowledge, attitudes and skills, that the described resource is designed to support. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.isFormatOf	A related resource that is substantially the same as the described resource, but in another format. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource"	Proposal
dcterms.isPartOf	A related resource in which the described resource is physically or logically included. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.isReferencedBy	A related resource that references, cites, or otherwise points to the described resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.isReplacedBy	A related resource that supplants, displaces, or supersedes the described resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource"	Proposal
dcterms.isRequiredBy	A related resource that requires the described resource to support its function, delivery, or coherence. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.issued	Date of formal issuance (e.g., publication) of the resource. (DC doesn't spec a date format but the established practice is YYYY-MM-DD.) It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	(former <time pubdate> no longer considered due to the abort of @pubdate)	Proposal
dcterms.isVersionOf	A related resource of which the described resource is a version, edition, or adaptation. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource"	Proposal
dcterms.language	A language of the resource. Recommended best practice is to use a controlled vocabulary such as RFC 4646 [RFC4646]. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	Redundant with the lang attribute on the html element. (Browsers pay attention to the lang attribute but not dcterms.language)	Proposal
dcterms.license	A legal document giving official permission to do something with the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML <link> element with the keyword "license" as value of the rel attribute.	Proposal
dcterms.mediator	An entity that mediates access to the resource and for whom the resource is intended or useful. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.medium	The material or physical carrier of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.modified	Date on which the resource was changed. (DC doesn't spec a date format but the established practice is YYYY-MM-DD.) It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.provenance	A statement for any changes in ownership and custody of the resource since its creation that are significant for its authenticity, integrity, and interpretation. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.publisher	An entity responsible for making the resource available. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	publisher	Proposal
dcterms.references	A related resource that is referenced, cited, or otherwise pointed to by the described resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	cite attribute on specific quotes, if any.	Proposal
dcterms.relation	A related resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	If the relation comes from an internal reference or quote, dcterms.references should be preferred.	Proposal
dcterms.replaces	A related resource that is supplanted, displaced, or superseded by the described resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource"	Proposal
dcterms.requires	A related resource that is required by the described resource to support its function, delivery, or coherence. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.rights	Information about rights held in and over the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML <link> element with the keyword "license" as value of the rel attribute, if referring to a legal license format.	Proposal
dcterms.rightsHolder	A person or organization owning or managing rights over the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.source	A related resource from which the described resource is derived. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	The HTML link type keyword "alternate" used with "link" element:rel="alternate" href="URI of related resource" if documents are different versions. Otherwise, cite attribute.	Proposal
dcterms.spatial	Spatial characteristics of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	geographic-coverage	Proposal
dcterms.subject	The topic of the resource.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	HTML built-in keywords description or keywords	Proposal
dcterms.tableOfContents	A list of subunits of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	HTML built-in keywords description or keywords. Otherwise, a details-summary model which would provide user-readable information.	Proposal
dcterms.temporal	Temporal characteristics of the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.title	A name given to the resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements	HTML built-in element title (not to be confused with @title attributes specific to each element)	Proposal
dcterms.type	The nature or genre of the resource.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
dcterms.valid	Date (often a range) of validity of a resource. It must be accompanied by a <link rel="schema.dcterms" href="http://purl.org/dc/terms/"> element.	DCMI Metadata Terms mapped according to Expressing Dublin Core metadata using HTML/XHTML meta and link elements		Proposal
detectify-verification	Used by the Detectify web vulnerability scanner as a domain verification key. The Detectify service will only consider the domain authenticated if it contains the "detectify-verification" meta tag, with the content set according to a per-customer token.	Documentation		Proposal
designer	Credits the designer(s) responsible for the visual presentation of a website.	Documentation		Proposal
entity	Allows for definitions of XML-style entities for substitution of references (defined as specially-named elements (e.g., use of data element and/or data-* attribute) or script tags) via inclusion of a JavaScript library. Library also supports inclusion of additional meta element entity definitions via iframe documents.	Documentation		Proposal
EssayDirectory	Defines a custom description of websites listed in EssayDirectory. Example: <meta name="EssayDirectory" content="Helping students find legitimate essay services.">	Documentation		Proposal
fdse-description	Tag used by FDSE search software, allows different description to be displayed in fdse results to that shown in description	[2]		Proposal
fdse-index-as	Tag used by FDSE search software, allows FDSE to index a page as url described here	[3]		Proposal
fdse-keywords	Tag used by FDSE search software, allows different keywords to be used by FDSE to keywords tag	[4]		Proposal
fdse-refresh	Tag used by FDSE search software, allows FDSE to ignore refresh meta tags	[5]		Proposal
fdse-robots	Tag used by FDSE search software, allows different robots instructions to be sent to FDSE than that sent to other search engines eg: index no index pages for local search	[6]		Proposal
FLBlogAuthor	Depicts whether author of the blog is lawfirm or FL author	FL Meta Names documentation		Proposal
format-detection	Enables or disables automatic detection of possible phone numbers in a webpage in Safari on iOS.	Apple Safari HTML Reference		Proposal
format-print	Store print media requirements for a page so a user agent can alert a user to unusual needs, such as special paper, before printing is to begin.	BrittleBit.org spec		Proposal
fragment	Opts a webpage into the AJAX crawling scheme when it does not have a "#!" URL. The only valid content value is "!". <meta name="fragment" content="!">	Google Crawable AJAX Specification		Proposal
FSDateCreation	Mentions the date when this web page was created	FL Meta Names documentation		Proposal
FSDatePublish	Mentions the date when this web page was created	FL Meta Names documentation		Proposal
FSFLContent	Informs the Publisher tool whether this page contains any content or not. Valid values yes or no	FL Meta Names documentation		Proposal
FSLanguage	Language of the content in the page. Example: US English or UK English, etc	FL Meta Names documentation		Proposal
FSOnSitemap	Whether the page is accessible via the Sitemap link in the firmsite	FL Meta Names documentation		Proposal
FSPageDescription	Description of the content of page	FL Meta Names documentation		Proposal
FSPageName	Name of the page within a Findlaw firmsite	FL Meta Names documentation		Proposal
FSSearchable	This tag mentions whether a certain page can be searched or not	FL Meta Names documentation		Proposal
FSSection	Depicts whether a page is a Section Page or simple page. Section pages can have links to other pages	FL Meta Names documentation		Proposal
FSWritertoolPageType	Page Type of a page in the firmsite. Page Type values help the Publisher toold in page creation	FL Meta Names documentation		Proposal
gcterms.topicTaxonomy	Organize resources specifically for taxonomy-based topical browse or search structures on websites (ie: breadcrumbs / website information architecture).	[7] Government of Canada, Web Content Management System Metadata Application Profile.		Proposal
geo.a1	National subdivision (state, canton, region, province, prefecture) of civil address to which the page is related. For resources within the US and Canada, corresponds to the common 2-character State/Province codes. <meta name="geo.a1" content="AB">	IETF Draft GeoTags.com RFC 4776		Proposal
geo.a2	County, parish, gun (JP), district (IN) of civil address to which the page is related. <meta name="geo.a2" content="Warwickshire">	IETF Draft GeoTags.com RFC 4776		Proposal
geo.a3	City, township, shi (JP) of civil address to which the page is related. <meta name="geo.a3" content="Calgary">	IETF Draft GeoTags.com RFC 4776		Proposal
geo.country	Case-insensitive ISO 3166-1 alpha-2 code of a country to which the page is related. <meta name="geo.country" content="de">	IETF Draft GeoTags.com ISO-3166-2		Proposal
geo.lmk	A landmark or vanity address to which the page is related. <meta name="geo.lmk" content="Auwaldstraße 11, 79110 Freiburg im Breisgau, Deutschland">	IETF Draft GeoTags.com		Proposal
geo.placename	Superseded by geo.lmk. Name of geographic place to which the page is related. <meta name="geo.placename" content="London, Ontario">	IETF Draft GeoTags.com		Proposal
geo.position	Geographic position to which the page is related. <meta name="geo.position" content="48.02682000000001;7.809769999999958"> Like icbm except for value syntax.	IETF Draft (expired) GeoTags.com		Proposal
geo.region	Superseded by either geo.country alone or geo.country plus geo.a1. Name of geographic region to which the page is related. Content is specified by ISO-3166. <meta name="geo.region" content="DE-BW">	IETF Draft GeoTags.com ISO-3166		Proposal
globrix.bathrooms	Globrix property information: Number of bathrooms the property has	FAQ About the Globrix meta tags.		Proposal
globrix.bedrooms	Globrix property information: Number of bedrooms the property has	FAQ About the Globrix meta tags.		Proposal
globrix.condition	Globrix property information: Condition of the property e.g. 'renovated'	FAQ About the Globrix meta tags.		Proposal
globrix.features	Globrix property information: Features of the property e.g. 'double glazing'	FAQ About the Globrix meta tags.		Proposal
globrix.instruction	Globrix property information: Property to Buy or Rent	FAQ About the Globrix meta tags.		Proposal
globrix.latitude	Globrix property information: The latitude of the property	FAQ About the Globrix meta tags.		Proposal
globrix.longitude	Globrix property information: The longitude of the property	FAQ About the Globrix meta tags.		Proposal
globrix.outsidespace	Globrix property information: External features of the property e.g. 'garden'	FAQ About the Globrix meta tags.		Proposal
globrix.parking	Globrix property information: Parking available for property e.g. 'parking for 2 cars'	FAQ About the Globrix meta tags.		Proposal
globrix.period	Globrix property information: Period of the property e.g. 'victorian terrace'	FAQ About the Globrix meta tags.		Proposal
globrix.poa	Globrix property information: If the property price is only available on application	FAQ About the Globrix meta tags.		Proposal
globrix.postcode	Globrix property information: Postcode of the property	FAQ About the Globrix meta tags.		Proposal
globrix.price	Globrix property information: Price for the property	FAQ About the Globrix meta tags.		Proposal
globrix.priceproximity	Globrix property information: The region of the attached price e.g. 'guide price of'	FAQ About the Globrix meta tags.		Proposal
globrix.tenure	Globrix property information: The tenure of the property e.g. 'leasehold'	FAQ About the Globrix meta tags.		Proposal
globrix.type	Globrix property information: Type of property e.g. 'semi-detatched house'	FAQ About the Globrix meta tags.		Proposal
globrix.underoffer	Globrix property information: Indicates if the property is under offer	FAQ About the Globrix meta tags.		Proposal
go-import	Defines a remote source code location and version control scheme for the Go programming language's toolchain. Content format: import-prefix vcs repo-root.	go tool documentation		Proposal
google	Multiple purposes: Used to declare text that should not be translated by the Google Translate plugin (<meta name="google" value="notranslate"> will declare the whole page should not be translated, while <span class="notranslate"> is for text or paragraph areas you wish to not be translated. Used "[t]o tell Google not to show a Sitelinks search box when your site appears in the search results" (implement with content="nositelinkssearchbox") (already in use). Presumably, multiple meta elements named "google" should all be parsed but this is may not have been explicitly specified anywhere.	"notranslate": Google blog post "nositelinkssearchbox": Google on Structured Data > Sitelinks Search Box		Nontranslation: Proposal No Sitelinks search box: Proposed
google-play-app	Promoting Apps with Smart App Banners	[8] Smart banners for Google Apps		Proposal
google-site-verification	Used to verify ownership for Webmaster Tools.	Google documentation		Proposal
gwt:property	Used to specify the locale client property	Locales in GWT		Proposal
handheldfriendly	Informs the BlackBerry browser that the content contained within the document is designed for small screens.	BlackBerry (handheldfriendly "largely obsolete")		Proposal
icas.datetime	A point or period of time associated with an event in the lifecycle of the resource represented in terms of an ICAS date and time format of unspecified information density (may include full, long, medium, short, or compressed forms).	a preliminary specification in the aaticas group on LinkedIn (http://www.linkedin.com/groups/aaticas-4034149). after a period of review, a specification for AAT ICAS meta keywords for HTML(5) will be referenced on an AAT ICAS area of the aatideas.org web site.		Proposal
icas.datetime.abbr	A point or period of time associated with an event in the lifecycle of the resource represented in terms of an ICAS abbreviated format such as "d2M03 t969".	a preliminary specification in the aaticas group on LinkedIn (http://www.linkedin.com/groups/aaticas-4034149). after a period of review, a specification for AAT ICAS meta keywords for HTML(5) will be referenced on an AAT ICAS area of the aatideas.org web site.		Proposal
icas.datetime.day	A point or period of time associated with an event in the lifecycle of the resource represented in terms of ICAS day-of-year format such as "2012 day 333 t969".	a preliminary specification in the aaticas group on LinkedIn (http://www.linkedin.com/groups/aaticas-4034149). after a period of review, a specification for AAT ICAS meta keywords for HTML(5) will be referenced on an AAT ICAS area of the aatideas.org web site.		Proposal
icas.datetime.long	A point or period of time associated with an event in the lifecycle of the resource represented in terms of ICAS long date format such as "UCN 12012 M03 Blue ❀ day 333 ❀ IDC zone(UT) t969 tt189". example <meta name="icas.datetime.long" content="UCN 12012 M03 Blue ❀ day 333 ❀ IDC zone(UT) t969 tt189"/>	a preliminary specification in the aaticas group on LinkedIn (http://www.linkedin.com/groups/aaticas-4034149). after a period of review, a specification for AAT ICAS meta keywords for HTML(5) will be referenced on an AAT ICAS area of the aatideas.org web site.		Proposal
icbm	Defines geographic position to which page is related to. The acronym stands for ICBM Intercontinental Ballistic Missile - an old, humorous allusion to the possible use of such coordinates. Example: <meta name="ICBM" content="47.0667, 15.4500" /> Like geo.position except for value syntax.	GeoURL documentation		Proposal
IE_RM_OFF	If set to "true", disables Internet Explorer 11 Reading View button adjacent to address bar when the page is detected to have content suitable for Reading View. This is intended for pages that are not articles and are not intended to be read in IE 11 Reading View.	Microsoft: Reading View Guidelines and Information In the Code tab, at the bottom where Opt Out is read.		Proposal
itemsPerPage	Used to identify the number of search results returned per page.	OpenSearch Specification		Proposal
keywords-not	Like keywords but instead keywords-not support Boolean NOT searches; useful for metaphors, satire/parody, and pages that say "this page is not about subject x" which therefore would be erroneously excluded by a NOT search against x.	BrittleBit.org spec		Proposal
license	Is used to to define the license under which a website is published.	Unofficial Documentation of license		Proposal
license:uri	Is used to to define the uri to the license, under which a website is published.	Unofficial Documentation of license:uri		Proposal
meta_date	The date used to indicate that the Metadata has been prepared and/or reviewed and approved by the Metadata Unit. Its purpose is administrative. (Used by "Autonomy".)	Health Canada Web Metadata Application Profile March 2009		Proposal
microtip	Specifies the cryptocurrency address (bitcoin, etc.) for sending tips to the people responsible for creating this page's content. This tag is used by various browser plugins that want to compensate the site's creators. Since it's microtipping instead of micropayments, there is no need to specify an amount. Example: <meta name="microtip" content="[bitcoin-address]"> Note: there can be multiple instances of this metatag on a page.	For full specification, see: http://autotip.io/docs/microtip-meta-tag		Proposal
mobile-agent	Specifies the mobile-compatible url of the web page. Used by mobile browsers and search engines to redirect mobile phone visitors to the proper mobile page. The following properties can be used in the value of the content attribute: url - The mobile-compatible url of the web page. format - The format of the mobile page. An enum of "wml", "xhtml" and "html5". Example: <meta name="mobile-agent" content="format=html5; url=http://3g.sina.com.cn/">	Baidu Mobile SEO		Proposal
mobile-web-app-capable	Sets whether a web application can be added standalone to a home screen and launched in fullscreen mode. Also proposed as a vendor-neutral version of apple-mobile-web-app-capable.	Add to Homescreen - Google Chrome Mobile — Google Developers (though a WHATWG or W3C spec would be preferred)	apple-mobile-web-app-capable (vendor specific synonym)	Proposal
mobileoptimized	Controls layout behavior in older versions of Internet Explorer (e.g., 6.5).	Microsoft Windows Mobile 6.5 documentation		Proposal
msapplication-config	"Pinned Sites" in Windows 8 The "msapplication-config" metadata defines the path to a browser configuration file, letting you set pinned sites customizations (such as tile background, badge updates and notifications) with this external XML file rather than metadata within the HTML markup of webpages. <meta name="msapplication-config" content="IEconfig.xml" /> Note Without this metadata, IE11 looks for a default "browserconfig.xml" in the root directory of the server.	Browser configuration schema reference		Proposal
msapplication-navbutton-color	"Jump List" or "Pinned Sites" in Windows 7 The "msapplication-navbutton-color" metadata define the custom color of the Back and Forward buttons in the Pinned Site browser window. Any named color, or hex color value is valid. <meta name="msapplication-navbutton-color" content="#FF3300" />	Declaring Pinned Site Metadata		Proposal
msapplication-notification	"Pinned Sites" and "Live Tiles" in Windows 8.1 Used to make pinned sites on the start screen into live tiles. Usage: <META name="msapplication-notification" content="cycle=7;frequency=60;polling-uri=http://www.example.com/notifications.xml" />	Pinned site metadata reference		Proposal
msapplication-square150x150logo	msapplication-square150x150logo Specifies the image to use as the wide tile, which is 310x150 pixels at 100% scaling. <meta name="msapplication-square150x150logo" content="images/logo.png"> Note The msapplication-square150x150logo value is supported as of IE11 Preview and applies to tiles pinned to the Windows Start screen.	Pinned site metadata reference		Proposal
msapplication-square310x310logo	msapplication-square310x310logo Specifies the image to use as the large tile, which is 310x310 pixels at 100% scaling. <meta name="msapplication-square310x310logo" content="images/largelogo.png"> Note The msapplication-square310x310logo value is supported as of IE11 Preview and applies to tiles pinned to the Windows Start screen.	Pinned site metadata reference		Proposal
msapplication-square70x70logo	msapplication-square70x70logo Specifies the image to use as the small tile, which is 70x70 pixels at 100% scaling. <meta name="msapplication-square70x70logo" content="images/tinylogo.png"> Note The msapplication-square70x70logo value is supported as of IE11 Preview and applies to tiles pinned to the Windows Start screen.	Pinned site metadata reference		Proposal
msapplication-starturl	"Jump List" or "Pinned Sites" in Windows 7 The "msapplication-starturl" metadata contains the root URL of the application. The start URL can be fully qualified, or relative to the current document. Only HTTP and HTTPS protocols are allowed. If this element is missing, the address of the current page is used instead. <meta name="msapplication-starturl" content="./" />	Declaring Pinned Site Metadata		Proposal
msapplication-tap-highlight	Link highlighting in Internet Explorer The "msapplication-tap-highlight" meta tag can be used to disable automatic highlighting of tapped links in Internet Explorer. Applies to IE10 on Windows Phone 8 and IE11 on Windows 8.1. <meta name="msapplication-tap-highlight" content="no" />	Link highlighting		Proposal
msapplication-task	"Jump List" or "Pinned Sites" in Windows 7 Jump List items act as entry points into the website even when the browser is not running. A Jump List can contain commonly used destinations and tasks. Some items apply to the whole site, and some apply only to specific users. For example, to add a single task called "Check Order Status" specify a meta element in the head of your webpage, as follows: <META name="msapplication-task" content="name=Check Order Status; action-uri=./orderStatus.aspx?src=IE9; icon-uri=./favicon.ico" />	Tasks in Jump List		Proposal
msapplication-TileColor	The "msapplication-TileColor" metadata define the background color of a tile in Pinned Sites in Windows 8. The tile color can be specified as a hex RGB color using CSS’s #rrggbb notation, via CSS color names, or by the CSS rgb() function. <meta name="msapplication-TileColor" content="#d83434"/>	High Quality Visuals for Pinned Sites in Windows 8		Proposal
msapplication-TileImage	The "msapplication-TileImage" metadata define the path to an image to be used as background for a tile in Pinned Sites in Windows 8. Tile images must be square PNGs 144px by 144px. <meta name="msapplication-TileImage" content="images/benthepcguy-144.png" />	High Quality Visuals for Pinned Sites in Windows 8		Proposal
msapplication-tooltip	"Jump List" or "Pinned Sites" in Windows 7 The "msapplication-tooltip" metadata provides additional tooltip text that appears when you hover over the Pinned Site shortcut in the Windows Start menu or on the desktop. <meta name="msapplication-tooltip" content="Channel 9 Podcasts" />	Declaring Pinned Site Metadata		Proposal
msapplication-wide310x150logo	msapplication-wide310x150logo Specifies the image to use as the medium tile, which is 150x150 pixels at 100% scaling. <meta name="msapplication-wide310x150logo" content="images/widelogo.png"> Note The msapplication-wide310x150logo value is supported as of IE11 Preview and applies to tiles pinned to the Windows Start screen.	Pinned site metadata reference		Proposal
msapplication-window	"Jump List" or "Pinned Sites" in Windows 7 The "msapplication-window" metadata sets the initial size of the Pinned Site window when it is launched for the first time. However, if the user adjusts the size of the window, the Pinned Site retains the new dimensions when it is launched again. The following properties can be used in the value of the content attribute: width - The window width in pixels. The minimum value is 800. height - The window height in pixels. The minimum value is 600. <meta name="msapplication-window" content="width=1024;height=768" />	Declaring Pinned Site Metadata		Proposal
MSSmartTagsPreventParsing	Prevent a Microsoft browser from adding a certain kind of content to a page because users could be confused into thinking the added content was part of the original page. (It's likely only relatively few copies of the browser, a beta release never finalized, are still in the installed Win base, but the base is so large that even relatively few would still be a significant absolute quantity.) This tag is used by Google: Custom Search Help: Meta Tags, as accessed 1-8-16. And "<meta content='true' name='MSSmartTagsPreventParsing'/>" appeared (with internal quote marks as singles) in the source code for <[9]>, as accessed 4-27-09.	BrittleBit.org spec		Proposal
msvalidate.01	One of the verification elements used by Bing.	Bing Webmaster Tools		Proposal
nonfiction	To reduce the "fake news" problem, this lets well-meaning page authors label satire and parody appropriately in metatags although unlabeled in content (not explicitly labeling being common in satire and parody). Characterize the principal content of the page as nonfiction, fiction, mixed, or other. This way, other websites and users needn't be fooled.	BrittleBit.org spec	fiction (antonym; see spec for usage)	Proposal
norton-safeweb-site-verification	Used to verify ownership of Website for Norton SafeWeb.	Norton SafeWeb Help Documentation		Proposal
origin	The origin meta tag is used to indicate the original source of a document.	The origin meta tag		Proposed
origin-trials	Used to enable experimental browser features for sites which are registered to participate in experimental trials.	Experimental Framework Trial Token Structure		Proposal
p:domain_verify	Used to register a site's domain with Pinterest as a "verified domain". Example: <meta name="p:domain_verify" content="5dd1c5f2db0ac0b521f08d56b4cd271b">	Pinterest Help Article		Proposal
page-version	When a page uploaded two or more times with the same last-modification date (per dc.modified, dcterms.modified, or article:modified_time metatag), distinguishing different uploads even on the same date can be done with the page-version metatag.	BrittleBit.org spec		Proposal
pingdom	Used by Pingdom monitoring services as a heartbeat verification. The heartbeat service will only consider the request successful if it contains the "pingdom" meta tag, with the content set according to a per-customer key. Example: <meta name="pingdom" content="6bh3nxnx"/>			Proposal
pinterest	Used to block pinterest from linking to content on the URL. Example: <meta name="pinterest" content="nopin"/>	Pinterest Help Article		Proposal
prism:alternateTitle	An alternate title or alternate headline for a resource that may be used in a table of contents, a popup etc. and can vary with platform.	PRISM Basic Metadata Specification V3.0		Proposal
pro	Signify expertise as judged by an authority. Counterpart to pro-auth (which see). Useful to search engines and Web directories.	BrittleBit.org spec		Proposal
pro-auth	Signify an authority, subject to search engine's or directory's judgment of importance and credibility (the judgment could be by a human working for a search engine), so the authority's listing of experts can carry weight, making search results more useful. Counterpart to pro (which see). Supported also by pro-auth-field (which see) and pro-auth-fragment (which see).	BrittleBit.org spec		Proposal
pro-auth-field	Signify an authority's claimed field of expertise, importance and validity to be judged by search engine or directory. Supports pro-auth (which see).	BrittleBit.org spec		Proposal
pro-auth-fragment	Signify which links from authority are links to experts, as distinct from other links. Supports pro-auth (which see).	BrittleBit.org spec		Proposal
rating	The Restricted to Adults label (RTA) provides a way for adult oriented websites to indicate that their content is off limits to children. RTA was introduced in 2006 and is currently used by a large number of adult web content providers. RTA is recognized by all major parental control filters. Example: <meta name="RATING" content="RTA-5042-1996-1400-1577-RTA" />	RTA documentation		Proposal
referrer	Controls whether the user agent includes the Referer header in HTTP requests originating from this document	Referrer Policy	referer	Proposal
RepostUsAPIKey	Used to verify ownership of Website for Repost syndication service	Meta Headers used by Repost		Proposal
ResourceLoaderDynamicStyles	MediaWiki's ResourceLoader uses this name with content set to the empty string. The purpose is to mark the DOM position before which dynamic styles should be added.	ResourceLoaderDynamicStyles		Proposal
review_date	The date a resource is scheduled for review by content creator in order to determine if it should be archived, updated or retained as is.	Health Canada Web Metadata Application Profile March 2009 IMS 6001-1-2, Metadata for Recordkeeping and Web Content		Proposal
revision	The revision of this page as reported by an underlying Version Control System. This is a free format string.	Meta Revision Specification		Proposal
revisit-after	revisit-after is used to tell search engines how often to recrawl the page. To our knowledge only one search engine has ever supported it, and that search engine was never widely used — at this point, it is nothing more than a good luck charm.	Google documentation		Proposal
rights	Assert legal rights for the page in a machine-parsable format. Rights could include those in copyright, for trade secrets, and in other intellectual property. Talk	BrittleBit.org spec		Proposal
rights-standard	The purpose is to enable search engines and other cataloging services to compile the types of rights allocated to the work. (Does any search engine actually implement this? hsivonen 07:34, 14 July 2011 (UTC)) This keyword does not provide, remove or alter any legal protections or designations. Format: <meta name="rights-standard" content="element id;rights" /> element id - the HTML Element ID of the item these rights apply to rights - what rights are assigned to the item "pd" - Public domain "cc by-sa" - Creative Commons Attribution "cc by-nd" - Creative Commons NoDerivs "cc by-nc" - Creative Commons Attribution-NonCommercial "cc by-nc-sa" - Creative Commons Attribution-NonCommercial-ShareAlike "cc by-nc-nd" - Creative Commons Attribution-NonCommercial-NoDerivs	Spec	Redundant with Microdata vocabulary for licensing works.	Proposal
robots	A comma-separated list of operators explaining how search engine crawlers should treat the content. This meta name is already supported by every popular search engine. Possible values are "noarchive" to prevent cached versions, "noindex" to prevent indexing, and "nofollow" works as the link rel value with the same name. The content value "NOODP" has been offered elsewhere, so I'm proposing it here. It blocks robots from using Open Directory Project descriptions of a website instead of Web pages' own meta descriptions. It may have been introduced by Microsoft. The content value "NOYDIR" has been offered by Yahoo, so I'm proposing it here. It blocks Yahoo's robot from using the Yahoo directory's descriptions of a website instead of Web pages' own meta descriptions. Whether any other robot supports this is unknown but possibly no other search engine uses Yahoo's directory anyway.	About the Robots <META> tag; NOODP value: Google, Yahoo, NOYDIR value: Yahoo, as accessed 4-28-09	baiduspider (for targeting Baidu or Baiduspider only) citeseerxbot (for targeting CiteSeerX only) googlebot (for targeting Googlebot only) googlebot-mobile (for targeting Googlebot-Mobile) ia_archive (for targeting Internet Archive (Wayback Machine) or Alexa only) msnbot (for targeting Microsoft or Bing only) slurp (for targeting Yahoo or slurp only) teoma (for targeting TEOMA or Ask.com only)	Proposal
rpuPlugin	Version of installed Repost syndication service plugin	Meta Headers used by Repost		Proposal
rqid	Request identifier of request that generated this page.	RequestID		Proposal
shareaholic:analytics	Enables or disables Shareaholic Analytics for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:article_author	A URL to the profile of the author of the content of the webpage for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:article_author_name	Contains the name of the author of the content of the webpage for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:article_modified_time	When the article was last modified for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:article_published_time	When the article was first published for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:article_visibility	Specifies whether a webpage should be publicly recommendable for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:drupal_version	Specifies Shareaholic for Drupal module version for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:image	An image URL which represents your webpage for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:keywords	Keywords associated with the content of a webpage for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:language	Language of the content of the webpage for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:outstreamads	Enables or disables Shareaholic Outstream Ads for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:shareable_page	Specifies whether a webpage should be publicly shareable for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:site_id	Shareaholic Site ID for the website for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:site_name	The name which should be displayed for the overall site for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:title	Title associated with the content of a webpage for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:url	The canonical URL of your webpage that will be used as its permanent ID for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
shareaholic:wp_version	Specifies Shareaholic for WordPress plugin version for use with the Shareaholic Content Amplification system	Shareaholic CAS Specification		Proposal
signet:authors	Authors of a page for use with javascript signet library	Signet Revision Specification		Proposal
signet:links	links to related pages, for use with the javascript signet library	Signet Revision Specification		Proposal
skype_toolbar	Prevents the Skype browser extension from automatically seeking through the page and replacing telephone numbers (or any number the program's algorithm thinks is a telephone number) with its own custom presentation that allows direct invocation of the Skype program to call the telephone number. Example: <meta name="skype_toolbar" content="skype_toolbar_parser_compatible" />	Skype Info		Proposal
startIndex	Used to identify the index of the first search result in the current set of search results.	OpenSearch Specification		Proposal
startver	Used to verify WebApps for JokeNetwork's Start!-WebApp	JokeNetwork's Start Documentation		Proposal
subject-datetime	Identify the principal datetime ranges of the subject of the page’s content, such as the dates of an historical event.	BrittleBit.org spec	page-datetime datetime-coverage datetime-coverage-start datetime-coverage-end datetime-coverage-vague	Proposal
subject-system	Where another metatag provides a subject for the page, that subject should be selected in accordance with a standard system for classifying subjects, such as one used for academic or public libraries of books. This metatag identifies the system in use for the current page, using a standard controlled vocabulary of system identifiiers.	BrittleBit.org spec	subj-. . . or subj-* (namespace not approved thus synonym would be "subj-" plus whatever is after hyphen in token)	Proposal
supported-media	Indicates the range of media for which the page's viewing is supported. Not intended for use by browsers, but rather by referrers that make use of crawl data.	supported-media spec		Proposal
theme-color	Indicates a color associated with the web site's theme. Web browsers might use this color to theme their UI to be consistent with the web site's color scheme. Usage: <meta name="theme-color" content="papayawhip">	Defined in HTML		Standard
thumbnail	The full URL of a file that provides a thumbnail for the HTML page. (Note: This violates HTML5, section 4.2.5.2, which says this, because the value is a URL, must be a link element and not a meta element, but Google already recommends and parses this as a meta element.)	Google page, as accessed Jan. 2, 2016. Original date unknown.		Proposed
topper	Notify website visitors of later changes; easier for website authors to maintain than RSS or Atom.	BrittleBit.org spec		Proposal
topper-major	Limit use of topper to major changes.	BrittleBit.org spec		Proposal
topper-minor	In use of topper, include minor changes.	BrittleBit.org spec		Proposal
totalResults	Used to identify the number of search results available for the current search.	OpenSearch Specification		Proposal
translator	The translator meta tag is used to give credit to, and provide contact info for, the translator of a document.	The translator meta tag		Proposed
twitter:app:country	If your application is not available in the US App Store, you must set this value to the two-letter country code for the App Store that contains your application.			Proposal
twitter:app:id:googleplay	String value, and should be the numeric representation of your app ID in Google Play.			Proposal
twitter:app:id:ipad	String value, should be the numeric representation of your app ID in the App Store.			Proposal
twitter:app:id:iphone	String value, should be the numeric representation of your app ID in the App Store.			Proposal
twitter:app:name:googleplay	Name of your Android app			Proposal
twitter:app:name:ipad	Name of your iPad optimized app			Proposal
twitter:app:name:iphone	Name of your iPhone app			Proposal
twitter:app:url:googleplay	Your app's custom URL scheme.			Proposal
twitter:app:url:ipad	Your app's custom URL scheme.			Proposal
twitter:app:url:iphone	Your app's custom URL scheme.			Proposal
twitter:card	The card type, which will be one of "summary", "photo", "app", or "player".			Proposal
twitter:creator	@username for the content creator / author.			Proposal
twitter:creator:id	Twitter ID for the content creator / author.			Proposal
twitter:data1	String value; value for labels such as price, items in stock, sizes, etc			Proposal
twitter:data2	String value; value for labels such as price, items in stock, sizes, etc			Proposal
twitter:description	A description of the content in a maximum of 200 characters.			Proposal
twitter:domain	Short URL assigned by Twitter to a website.			Proposal
twitter:image	A URL to the image representing the content.			Proposal
twitter:image0	A URL to the image representing the first photo in your gallery.			Proposal
twitter:image1	A URL to the image representing the second photo in your gallery.			Proposal
twitter:image2	A URL to the image representing the third photo in your gallery.			Proposal
twitter:image3	A URL to the image representing the fourth photo in your gallery.			Proposal
twitter:image:height	The height of the image representing the content.			Proposal
twitter:image:src	URL of image to use in the card. Image must be less than 1MB in size.			Proposal
twitter:image:width	The width of the image representing the content.			Proposal
twitter:label1	String value; label such as price, items in stock, sizes, etc			Proposal
twitter:label2	String value; label such as price, items in stock, sizes, etc			Proposal
twitter:player	HTTPS URL to iframe player. This must be a HTTPS URL which does not generate active mixed content warnings in a web browser			Proposal
twitter:player:height	Height of IFRAME specified in twitter:player in pixels			Proposal
twitter:player:stream	URL to raw stream that will be rendered in Twitter's mobile applications directly			Proposal
twitter:player:stream:content_type	The MIME type/subtype combination that describes the content contained in twitter:player:stream			Proposal
twitter:player:width	Width of IFRAME specified in twitter:player in pixels			Proposal
twitter:site	@username for the website used in the card footer.			Proposal
twitter:site:id	Twitter ID for the website used in the card footer.			Proposal
twitter:title	The title of the content as it should appear in the card.			Proposal
twitter:url	Canonical URL of the card content.			Proposal
typemetal.formatprefs	Per-file HTML formatting preferences used by the TypeMetal HTML editor	TypeMetal User Guide		Proposal
verify-v1	Superseded by google-site-verification. Legacy verification for Google Sitemaps.	Inside Google Sitemaps: More about meta tag verification		Proposal
version	The version of a web application according to the Semantic Versioning specification Example: <meta name="version" content="0.1.0+1">	Documentation		Proposal
vfb-version	Specifies a Visual Form Builder plugin version for Wordpress.	Visual Form Builder Documentation and specs		Proposal
viewport	Provides a way for documents to specify (using markup rather than CSS) the size, zoom factor, and orientation of the viewport that is used as the base for the document's initial containing block. The following properties can be used in the value of the content attribute: width height initial-scale minimum-scale maximum-scale user-scalable Examples: <meta name="viewport" content="initial-scale=1.0"> <meta name="viewport" content="width=480, initial-scale=2.0, user-scalable=1">	CSS Device Adaptation		Proposal
web_author	Credits the developer(s) responsible for the technical design of a website.	Documentation	designer - for visual presentation	Proposal
witget	Used to verify ownership for Witget.com. Example <meta name="witget" content="XXXXXXXXXXXXXXXXXXXXXX">	Witget manual		Proposal
wot-verification	Used to verify ownership of WOT (Web Of Trust)	WOT's verify your site wiki page		Proposal
wt.ac	Advertising Click parameter When a visitor to your site clicks on an ad, that action is referred to as an Ad Click. The following META tag tracks advertising clicks: <META NAME="WT.ac" CONTENT="name"> Defines the name of the advertisement clicked to reach a particular web page. The Ad Click must contain an external redirect back to the client. The redirect needs to include the necessary code to generate a hit to the SDC server. You can designate multiple Advertising Clicks using semicolons. Examples: <a href="file111.html?WT.ac=CONTENT111"> <a href="file222.html?WT.ac=CONTENT222"> The name of the advertisement clicked to reach a particular web page. To capture this information with DCS, the Advertising Click must contain an external redirect back to the client. The redirect needs to include the necessary code to generate a hit to the DCS. The maximum length for each name is 64 bytes.	Webtrends Parameters		Proposal
wt.ad	Advertising View parameter Visitors often view advertisements that they do not necessarily click on. You can use On-Site Advertising to determine the number of visitors to your web site who view particular ads. With this feature you can produce advertising reports for each of your clients. If you are selling advertising space on your web site, for example, you can collect traffic statistics to help determine pricing schedules. The following META tag tracks advertising views: <meta name="WT.ad" content="My content"> An Ad View occurs when a visitor views a page containing an ad. An ad is a link or graphic that contains an Ad Click parameter in the query portion of it's URL.	Webtrends Parameters		Proposal
wt.cg_n	Name of the Content Group Used to configure the appropriate Webtrends advanced feature. These are just some of the more popular ones. These appear in your META tags. – showing you the web page, the source (meta tag), the log files entry and the subsequent WT report. Example: <meta name="wt.cg_n" content="My content">	Webtrends Parameters		Proposal
wt.cg_s	Name of Content Sub-Group Used to configure the appropriate Webtrends advanced feature. These are just some of the more popular ones. These appear in your META tags. – showing you the web page, the source (meta tag), the log files entry and the subsequent WT report. Example: <meta name="wt.cg_s" content="My content">	Webtrends Parameters		Proposal
wt.mc_id	Identifies the ID of the marketing campaign To attract new students, a university launches a marketing campaign by sending recruitment email to all graduating high school seniors in a metropolitan area. The email links to a special landing page in the university’s web site, containing the following META tag to track marketing campaigns. Example: <META NAME="WT.mc_id" CONTENT="1X2GG34"> You may use this parameter on the URL. Example: <a href="link?WT.mc_id=1X2GG34"> The Campaign ID 1X2GG34 represents recruits to be contacted by email	Webtrends Parameters		Proposal
WT.si_n	Scenario analysis parameter - scenario name This defines a scenario name for the page or set of pages to be included in the scenario. This in turn produces a funnel type report in Webtrends. Example: <meta name="WT.si_n" content="my_scenario_name">	Webtrends Parameters.		Proposal
WT.si_p	Scenario analysis parameter - scenario step name This defines a scenario step name for the page or set of pages to be included in the scenario. This in turn produces a funnel type report in Webtrends. It works when paired with metedata tag name WT.si_n. Example: <meta name="WT.si_p" content="my_scenario_step_name">	Webtrends Parameters.		Proposal
WT.si_x	Scenario analysis parameter - scenario step number This defines a scenario step number for the page or set of pages to be included in the scenario. This in turn produces a funnel type report in Webtrends. It works when paired with metedata tag name WT.si_n, and as an alternative to Wt.si_p. Example: <meta name="WT.si_x" content="my_scenario_step_number">	Webtrends Parameters.		Proposal
wt.sv	Tracking Servers parameter If your site is hosted on multiple servers, a server cluster, or a server farm, and you want to evaluate the performance of your load balancer, Webtrends can track page views for each server. To do so, populate the following META tag on all pages on each server: Example: <meta name="WT.sv" content="My Server"> Defines the name of the machine that serves the web page. If you have two servers (Server1 and Server2), you would make two copies of the META tag and designate CONTENT=“Server1” for deployment to pages on the first server and CONTENT=“Server2” for deployment to the same pages on the second server. For a server farm, you can extract the value of the built-in server name and dynamically assign it to the META tag using server-side scripting. Example: <meta name="WT.sv" content="Server1"> <meta name="WT.sv" content="Server2"> An Ad View occurs when a visitor views a page containing an ad. An ad is a link or graphic that contains an Ad Click parameter in the query portion of it's URL.	About WT.ad.		Proposal
wt.ti	Tracking Page Titles You may want to modify a page title before sending it to Webtrends in the following cases: You are dealing with dynamic content pages identified by URL parameters, and the page title represents the title of the base URL page rather than the dynamic content page. Unless you modify the page titles, all pages have the same title in the reports. All pages have been assigned the same title, for reasons of style or company policy. Even though URLs are displayed in addition to page title, the entire URL cannot be depended upon to distinguish one page from another. Use server-side scripts to change the title to something that reflects the content of the pages so that you can identify them in reports. Next, pass the customized page titles to Webtrends, using the following META tag: <META NAME="WT.ti" CONTENT="title"> Defines the name of the title for this page.	Webtrends Parameters		Proposal
y_key	Used to verify ownership for Yahoo! Site Explorer	Yahoo! documentation		Proposal
yandex-verification	Used to verify ownership for Yandex Webmaster.	Yandex Webmaster ownership verification		Proposal
ZOOMCATEGORY	Category of page to be grouped in Wrensoft Zoom Search Engine.	Wrensoft Zoom Meta Documentation		Proposal
ZOOMDESCRIPTION	Alternative page description for Wrensoft Zoom Search Engine.	Wrensoft Zoom Meta Documentation		Proposal
ZOOMIMAGE	URL to image to be displayed alongside result in Wrensoft Zoom Search Engine.	Wrensoft Zoom Meta Documentation		Proposal
ZOOMPAGEBOOST	Page boost factor to increase or decrease the relevance of page in Wrensoft Zoom Search Engine.	Wrensoft Zoom Meta Documentation		Proposal
ZOOMTITLE	Alternative page title for Wrensoft Zoom Search Engine.	Wrensoft Zoom Meta Documentation		Proposal
ZOOMWORDS	Additional keywords to be indexed for Wrensoft Zoom Search Engine.	Wrensoft Zoom Meta Documentation		Proposal

Proposals That Don't Meet the Requirements For a Registration

Note that these proposals can be moved back to the registry table if the problems listed in the rightmost column of this table are addressed.

Keyword	Brief description	Link to specification	Synonyms	Status	Registration requirement failure
blogcatalog	Used to verify ownership of Blog Catalog.com	Blog catalog site		Incomplete proposal	Claimed spec link is not a link to a spec
created	The datetime at which the document was created. The value is an ISO8601 date. The date MUST follow the W3C Profile of ISO 8601 with a granularity of "Complete date:" or finer. The BBC use this name.			Incomplete proposal	Lacks link to a spec
expires	meta name='expires' defines the expiration date of the page. This can be used for web pages in preparation for an upcoming event, e.g. a registration form for an exposition or competition, or other cases with a pre-set date when the document will no longer be valid, e.g. a product offer in a special sale or a support page for a product known not to be supported anymore from a given time onward. Search engines should respond to this meta tag in a reasonable way, i.e. by removing the page from their main search results after the expiration date (possibly still returning the result in a special search for expired pages as long as the page exists and is not explicitly excluded via robots.txt or meta name='robots' etc.) or simply by indicating to the user that this result is out-of-date. The content attribute should define the expiration date in accordance with http://www.w3.org/TR/NOTE-datetime . The meta tag should not be used for pages without expiration date. However, for historical reasons, search engines should also interpret other date formats where possible and should be prepared to find values such as "", "0", "no" and "never". Such non-date values are to be interpreted as no expiration date. Correctly formatted example: <meta name='expires' content='2012-12-31T23:59Z'> This tag is not to be confused with and has a different meaning than meta http-equiv='expires'.			Incomplete proposal	Lacks link to a spec
fb:admins	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
fb:page_id	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
gm-gpx-v	Wordpress Plugin Google Maps GPX Viewer	Google Maps GPX Viewer		Incomplete proposal	Claimed spec link is not a link to a spec
google-translate-customization	Used to verify ownership for Website Translator. <meta name="google-translate-customization" content="Your Website Code Goes Here. Generated When Adding The Google Translate Plugin To Your Site" />			Incomplete proposal	Lacks link to a spec
nextgen	Used for nextgen gallery plugin in wordpress	Alexa FAQ About this meta attribute Reference		Incomplete proposal	Unrelated spec link
nibbler-site-verification	Used to verify ownership of Nibbler site	Nibbler site		Incomplete proposal	Claimed spec link does not link to a spec
og:description	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
og:image	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
og:site_name	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
og:title	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
og:type	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
og:url	Open Graph Protocol by Facebook developers	Facebook developers		Incomplete proposal	The spec specifies this to be a value of the property attribute--not a meta keyword
property="og:*"	Metadata used by the Open Graph protocol (used by Facebook). Note: currently these are defined as: <meta property="og.*" content="x"/>	FAQ About the Open Graph protocol from Facebook.		Doesn't belong in this registry	Not a value to be used in the name attribute
resolutions	Authoring web sites to use resolution independent images that display beautifully on high-resolution displays should be made as easy as possible for developers and should not require JavaScript to accomplish. To accomplish this, I propose a new HTML Meta Tag, resolutions, that can be used to specify that high-resolution versions of images linked to from the page are available and that the browser should use them in place of the lower-resolution default images if it detects that a user is using a high-resolution screen. The resolutions meta tag lists the device-pixel ratios supported by images in the page. So, for example… <meta name="resolutions" content="2x"> … means that the developer is telling the browser that she has created 2x resolution images for the images linked to from the current page and named them with a @2x suffix. To illustrate, if her image tag is as follows… <img src="/images/flower.jpg" alt="A flower"> … then she has two image files under /images: the low-resolution default (flower.jpg), and a higher-resolution (200%) version named [email protected]. (This is the same naming convention already used by Apple in its Cocoa Touch framework for automatically loading in higher-resolution versions of images.) Based on the meta tag, if the browser detects that the user is running at a min-device-pixel-ratio of 2.0, it will automatically ask for the 2x version of the image ([email protected]) instead of the default image as specified in the image tag. Finally, so as not to flood external sites with high-resolution image requests, this functionality would only work for local images specified via relative links. Multiple resolutions The resolutions tag can also contain a list of supported device-pixel ratios so as to support even higher-resolution displays when and if they become available in the future. For example: <meta name="resolutions" content="2x, 4x, 8x"> In this case, the developer would provide 2x, 4x, and 8x versions of all images. So, in the running example, she would make flower.jpg, [email protected], [email protected], and [email protected]. Advantages The advantages of this approach are several: Makes it very simple for developers to support high-resolution displays like the iPhone 4's Retina screen Does not require JavaScript Does not change the default way that things work (if the meta tag is not specified, the browser simply behaves as it always has).	Proposal for native browser support of high-resolution image substitution How to make your web content look stunning on the iPhone 4’s new Retina display		Incomplete proposal	Lacks link to a spec

Failed Proposals

Keyword	Brief description	Link to more details	Synonyms	Status
bot-. . .		Old MetaExtensions revision diff & edit		Unendorsed
cache	This doesn't actually work; use HTTP headers instead. Value must be "public", "private", or "no-cache". Intended as a simple way to tell user agents whether to store a copy of the document or not. An alternate for HTTP/1.1's cache-control; for publishers without access to modifying cache-control.	none		Unendorsed
DC.	Dublin Core, maintained by Dublin Core MetaData Initiative (DCMI), is an extensive system with some overlap with non-DC names. This reserves all strings that begin with DC and a dot. Not true; DC-HTML doesn't use hardwired prefixes, but defines the prefixes using link/@rel="scheme.prefix"	DCMI		Unendorsed
dir-content-pointer	No longer useful. The function is better performed with HTML markup.	Old MetaExtensions revision diff & edit		Unendorsed
no-email-collection	HTML5 prohibits URL-valued meta names. They should be rel keywords instead. Intended to reference legal policy of web site indicating that harvesting of e-mail addresses on the site is not permitted and in violation of applicable laws such as the CAN-SPAM Act of 2003.	Project Honey Pot		Unendorsed