URL

A uniform resource locator (URL), colloquially known as a web address, is a reference to a resource on the World Wide Web. A URL specifies the location of a resource on a computer network and a mechanism for retrieving it. A URL is a specific type of Uniform Resource Identifier (URI), although many people use the two terms interchangeably. A URL is most commonly used to reference a web page (HTTP/HTTPS) but is also used for file transfer (FTP), email (mailto), database access (JDBC), and many other applications.

string of characters used to identify a name of a resource on a network such as the internet

phenomenon in which URLs gradually tend to cease functioning

From the point of view of a given web resource (referent), a backlink is a regular hyperlink on another web resource (the referrer) that points to the referent. A web resource may be (for example) a website, web page, or web directory.

A permalink or permanent link is a URL 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 content-syndication software systems support such links. Sometimes URL shortening is used to create them.

thumb|right|240px|An incorrectly entered URL could lead to a website operated by a cybersquatter. Typosquatting, also called URL hijacking, a sting site, a cousin domain, or a fake URL, is a form of cybersquatting, and possibly brandjacking which relies on mistakes such as typos made by Internet users when inputting a website address into a web browser. A user accidentally entering an incorrect website address may be led to any URL, including an alternative website owned by a cybersquatter.

web technique

HTTP header field that identifies the address of the webpage that linked to the resource being requested

technique for making a Web page available under more than one URL address

URL parameters used for tracking

type of hyperlink

part of a URL which assigns values to specified parameters

TinyURL is a URL shortening web service, which provides short aliases for redirection of long URLs. Kevin Gilbertson, a web developer, launched the service in January 2002 as a way to post links in newsgroup postings which frequently had long, cumbersome addresses. TinyURL was the first notable URL shortening service and is one of the oldest still currently operating.

identifier for resources made using Unicode/ISO 10646 characters specified by RFC 3987

URL intended to improve the usability and accessibility of a website or web service by being immediately and intuitively meaningful to non-expert users

software component that performs rewriting on Uniform Resource Locators, modifying their appearance. This modification is called URL rewriting. It is a way of implementing URL mapping or routing within a web application

query language

website that poses as another website, often allowing a malicious computer attack