This page lists reference documentation for URIs and the components that make up a URI.

URI authority

Theauthority of a URI is the section that comes after thescheme and before the path. It may have up to three parts: user information, host, and port.

URI fragment

Thefragment of a URI is the last part of the URI, starting with the# character. It is used to identify a specific part of the resource, such as a section of a document or a position in a video. The fragment is not sent to the server when the URI is requested, but it is processed by the client (such as the browser) after the resource is retrieved.

URI path

Thepath of a URI is the section that comes after theauthority.It contains data, usually organized in hierarchical form, to identify a resource within the scope of the URI'sscheme and naming authority.

URI query

Thequery of a URI is the section that comes after thepath.It contains non-hierarchical data to identify a resource within the scope of the URI'sscheme and naming authority along with data in the path component.

URI schemes

Thescheme of a URI is the first part of the URI, before the: character.It indicates which protocol the browser must use to fetch the resource.The scheme may affect how the rest of the URI is structured and interpreted.