Reference

The URI reference provides details about the components that make up a URI.

Schemes

The first part of the URI, before the : character, which indicates the protocol the browser must use to fetch the resource.

The section that comes after the scheme and before the path. It may have up to three parts: user information, host, and port.

Path

The section after the authority. Contains data, usually organized in hierarchical form, to identify a resource within the scope of the URI's scheme and authority.

Query

The section after the path. Contains non-hierarchical data to identify a resource within the scope of the URI's scheme and naming authority along with data in the path component.

Fragment

An optional part at the end of a URI starting with a # 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.

Guides

The URI guides help you work with URIs on the web.

Choosing between www and non-www URLs

Guidance on when sites should use a www. prefix in URLs (www.example.com vs example.com).

Specifications

See also

• What is a URL?