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existing rel values


rel values indicate the relationship of the target resource to the resource on which they appear. In microformats, rel are used on links (e.g. <a rel="home" href="http://example.org">). Elsewhere, they are also used on link headers (e.g. <link rel= start href="http://example.org/section/page1.htm">.

Multiple values may be used, in the same manner as multiple class values (e.g. <a rel="home me contents" href="http://example.org">).


In (X)HTML, the same values may be used as rev ("reverse relationship") values, to indicate the relationship of resource on which they appear to the target resource. Such use (apart from the "grand-fathered" case of VoteLinks) is deprecated in microformats.


These rel values are defined formats from specifications (HTML 4, microformats) are thus are recommended for general use. Alphabetically ordered by value.

Note: this list is incomplete, please help complete it from the following sources:

rel value summary defining specification
alternate...HTML4 link type
appendix...HTML4 link type
bookmark...HTML4 link type
chapter...HTML4 link type
contents...HTML4 link type
copyright...HTML4 link type
friend the person represented by the current document considers the person represented by the refrenced document to be a friend XFN
glossary...HTML4 link type
help...HTML4 link type
index...HTML4 link type
methe referenced document represents the same person as the current documentXFN
homethe referenced document is the homepage of the site in which the current page appears.rel-home
licensethe referenced document is license information for the current page.rel-license
nextthe next document in a navigation orderHTML4 link type
prevthe previous document in a navigation orderHTML4 link type
section...HTML4 link type
start...HTML4 link type
stylesheeta style sheet for the current documentHTML4 link type
subsection...HTML4 link type
tagthe referenced document represents a "tag", which is like a keyword or category label, for the current documentrel-tag


Several rel values are being brainstormed as potential microformats and are thus listed here. If you find you have a use for such semantics in real world examples, consider trying out these values and provide feedback on the respective brainstorming page(s) with your results/experience.

Sources: group-brainstorming, ...

rel value summary proposed in
groupthe referenced document represents a group that the person represented by the current document belongs togroup-brainstorming
memberthe referenced document represents a member of the group represented by the current documentgroup-brainstorming


The following rel values were in earlier version(s) of specification(s) and it is presumed by their absence from the most recent version of the respective specification(s) that they have been deprecated or obsoleted. Use of them could be considered a bit more standard than just POSH, although you may wish to research why such values were omitted from latter specifications before using them. If you do discover the reasoning, please add a short statement or link to thereof into the appropriate place in the following table.

Sources: HTML3 (expired!) - (has been superceded by HTML 3.2 - which itself has been superceded by HTML 4.0 - which itself has been updated by HTML 4.01, commonly referred to as "HTML 4" in this wiki and other places.)

rel value summary defining specification why dropped
tocThe link references a document serving as a table of contents.HTML 3unknown
upWhen the document forms part of a hierarchy, this link references the immediate parent of the current document.HTML 3unknown

POSH usage

There are numerous rel values used as POSH in the wild, their origins are not necessarily known, nor are their meanings consistent, but it may still be useful to document their existence and summarize their implied meanings/usage intent.

rel value summary origin
archivean archive document for the current blogunknown origin


See implementations.


existing-rel-values was last modified: Wednesday, December 31st, 1969