A __permalink__ or __permanent link__ is a Uniform Resource Locator that is intended to remain unchanged for many years into the future, yielding a hyperlink that is less susceptible to link rot.
Permalinks are often rendered simply, that is, as clean URLs, to be easier to type and remember. Most modern blogging and web syndication software systems support such links. Sometimes URL shortening is used to create them- wikipedia 
A permalink is a type of persistent identifier and the word ''permalink'' is sometimes used as a synonym of ''persistent identifier.'' More often, though, ''permalink'' is applied to persistent identifiers which are generated by a content management system for pages served by that system.
This usage is especially common in the blogosphere. Such links are not maintained by an outside authority, and their persistence is dependent on the durability of the content management system itself.
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