URI

A Uniform Resource Identifier (URI), is an Internet protocol element consisting of a short string of characters that conform to a certain syntax. The string comprises a name or address that can be used to refer to a resource. It is a fundamental component of the World Wide Web.

Examples of absolute URIs

• http://somehost/absolute/URI/with/absolute/path/to/resource.txt
• ftp://somehost/resource.txt
• urn:issn:1535-3613

Examples of URI references

• http://example/resource.txt#frag01
• http://somehost/absolute/URI/with/absolute/path/to/resource.txt
• /relative/URI/with/absolute/path/to/resource.txt
• relative/path/to/resource.txt
• ../../../resource.txt
• resource.txt
• /resource.txt#frag01
• #frag01