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RelExtensions
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This page lists the allowed extension values for the rel="" attribute in HTML5. You may add your own values to this list, which makes them legal HTML5 rel values. We ask that you try to avoid redundancy; if someone has already defined a value that does roughly what you want, please reuse it.
| Keyword | Effect on... | Brief description | Link to more details | Synonyms | Status | |
|---|---|---|---|---|---|---|
| link | a and area | |||||
| acquaintance | hyperlink | hyperlink | the person represented by the current document considers the person represented by the referenced document to be an acquaintance | XFN | Proposal | |
| author | hyperlink | hyperlink | The linked document is the page/email an agent (people or firm or...) responsible for the content. | Proposal | ||
| canonical | hyperlink | not allowed | Robots (e.g., search engines) should treat the document containing the tag as a minor variation of the linked document, which may result in the removal of the former from a web index and in the consolidation of its quality signals in the latter. | [1] | Proposal | |
| chapter | hyperlink | hyperlink | Target document is a subdocument of the current document. | HTML4 | section, subsection, appendix | Proposal |
| child | hyperlink | hyperlink | the referenced person is a child of the person represented by the current document | XFN | Proposal | |
| co-resident | hyperlink | hyperlink | the referenced person lives in the same residence as the person represented by the current document | XFN | Proposal | |
| co-worker | hyperlink | hyperlink | the referenced person is a co-worker of the person represented by the current document | XFN | Proposal | |
| colleague | hyperlink | hyperlink | the referenced person is a colleague of the person represented by the current document | XFN | Proposal | |
| contact | hyperlink | hyperlink | the person represented by the current document considers the person represented by the referenced document to be a contact | XFN | Proposal | |
| contributor | hyperlink | hyperlink | The linked document is the page/email an agent (people or firm or...) involved in the production of the content, but not his main author(s). | Proposal | ||
| crush | hyperlink | hyperlink | this person considers the referenced person to be a crush (i.e. has a crush on the referenced person) | XFN | Proposal | |
| date | hyperlink | hyperlink | this person considers the referenced person to be a date (i.e. is dating the referenced person) | XFN | Proposal | |
| edit | hyperlink | hyperlink | Target document is an editable version of the current document. | Atom Protocol | Proposal | |
| edituri | hyperlink | not allowed | a link to an RSD file describing how to edit the given page. | rsd | Proposal | |
| friend | hyperlink | hyperlink | the person represented by the current document considers the person represented by the referenced document to be a friend | XFN | Proposal | |
| glossary | hyperlink | hyperlink | Target document provides definitions for words in current document. | HTML4 | Proposal | |
| kin | hyperlink | hyperlink | the referenced person is part of the extended family of the person represented by the current document | XFN | Proposal | |
| license | hyperlink | hyperlink | The linked document is a license for the current document | rel-license | Proposal | |
| me | hyperlink | hyperlink | the referenced document represents the same person as does the current document | XFN | Proposal | |
| met | hyperlink | hyperlink | this person has met the referenced person | XFN | Proposal | |
| muse | hyperlink | hyperlink | the referenced person inspires the person represented by the current document | XFN | Proposal | |
| neighbor | hyperlink | hyperlink | the referenced person lives nearby the person represented by the current document | XFN | Proposal | |
| openid.delegate | external resource | not allowed | OpenID 1.1 authentication delegation | OpenID specification | Proposal | |
| openid.server | external resource | not allowed | OpenID 1.1 authentication delegation | OpenID specification | Proposal | |
| openid2.local_id | external resource | not allowed | OpenID 2.0 authentication delegation | OpenID Auth 2.0 section 7.3.3 | Proposal | |
| openid2.provider | external resource | not allowed | OpenID 2.0 authentication endpoint | OpenID Auth 2.0 section 7.3.3 | Proposal | |
| parent | hyperlink | hyperlink | the referenced person is a parent of the person represented by the current document | XFN | Proposal | |
| pgpkey | hyperlink | not allowed | The linked document is the PGP public key file (which may contain multiple keys) of the author(s) of the page. | [2], [3] | Proposal | |
| profile | hyperlink | not allowed | this referenced link is a metadata profile for the current document | HTML Meta data profiles | Proposal | |
| related | hyperlink | hyperlink | this referenced link identifies a resource related to the current document | Atom Syndication Format | Proposal | |
| reviewer | hyperlink | not allowed | The linked document is the page/email an agent (people or firm or...) responsible for reviewing the content. | Of interest: used by the CSS WG for the CSS 2.1 Test Suite. | ||
| script | not allowed | not allowed | Was proposed to replace <script>. Use <script> instead. | none | Rejected | |
| service | external resource | not allowed | Points to a resource describing a service API | ServiceRelExtension | Proposal | |
| shortlink | hyperlink | hyperlink | Identifies a shorter form of the URL for the current document, provided by the document owner. | shortlink Specification | Proposal | |
| sibling | hyperlink | hyperlink | the referenced person is a sibling of the person represented by the current document | XFN | Proposal | |
| spouse | hyperlink | hyperlink | the referenced person is a spouse of the person represented by the current document | XFN | Proposal | |
| sweetheart | hyperlink | hyperlink | this person considers the referenced person to be their sweetheart | XFN | Proposal | |
| tag | hyperlink | hyperlink | The linked document is an author-designated "tag" (or keyword/subject) for the current page. | rel-tag | Proposal | |
| technicalauthor | hyperlink | hyperlink | The linked document is the page/email an agent (people or firm or...) responsible for the technical construction of the page (i.e. the HTML/CSS/PHP code), not for the content. | Proposal | ||
| timesheet | external resource | not allowed | SMIL Timesheet | SMIL Timesheets 1.0 | Proposal | |
| translator | hyperlink | hyperlink | The linked document is the page/email an agent (people or firm or...) responsible for the translation of the page. | Proposal | ||
| webmaster | hyperlink | hyperlink | The linked document is the page/email an agent (people or firm or...) aviable for requests about the content of the page. | maintainer | Proposal | |
| widget | hyperlink | hyperlink | Points to a widget. | Widgets 1.0 Editor's draft | Proposal | |
| wlwmanifest | hyperlink | not allowed | A link to a manifest for Windows Live Writer. | msdn | Proposal | |
The "Effect on... link" column must either say "not allowed" if the rel value is not allowed on <link> elements, "hyperlink" if the rel value creates a hyperlink, or "external resource" if the rel value creates a link to an external resource.
The "Effect on... a and area" column must either say "not allowed" or "hyperlink".
For the "Status" section to be changed to "Accepted", the proposed keyword must either have been through the Microformats process, and been approved by the Microformats community; or must be defined by a W3C specification in the Candidate Recommendation or Recommendation state. If it fails to go through this process, it is "Rejected".
For more details, see the HTML5 specification. See also the Microformats wiki page on this matter.