existing-rel-values
existing rel values
formats
These rel values are defined formats from specifications (HTML4, 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:
- HTML4 link type
- xfn and other microformats
| 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 |
| me | the referenced document represents the same person as the current document | XFN |
| home | the referenced document is the homepage of the site in which the current page appears. | rel-home |
| license | the referenced document is license information for the current page. | rel-license |
| next | the next document in a navigation order | HTML4 link type |
| prev | the previous document in a navigation order | HTML4 link type |
| section | ... | HTML4 link type |
| start | ... | HTML4 link type |
| stylesheet | a style sheet for the current document | HTML4 link type |
| subsection | ... | HTML4 link type |
| tag | the referenced document represents a "tag", which is like a keyword or category label, for the current document | rel-tag |
| up | When the document forms part of a hierarchy, this link references the immediate parent of the current document. | HTML 3 (et al?) |
| toc | The link references a document serving as a table of contents. | HTML 3 (et al?) |
brainstorming
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 |
|---|---|---|
| group | the referenced document represents a group that the person represented by the current document belongs to | group-brainstorming |
| member | the referenced document represents a member of the group represented by the current document | group-brainstorming |
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 |
|---|---|---|
| archive | an archive document for the current blog | unknown origin |
Tools
In addition to microformat parsers, the following make use of links marked with a "rel" value:
- cmSiteNavigation extension for Firefox
- Parses additional link types also.