URL

URLsUniform Resource Locatorweb addressweb addressesUniform Resource Locatorswebsite addressaddressfiltering URLsweb site addressabsolute URLs
A Uniform Resource Locator (URL), colloquially termed a web address, is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it.wikipedia
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Web resource

resourceelectronic resourceselectronic resource
A Uniform Resource Locator (URL), colloquially termed a web address, is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it.
The web is designed as a network of more or less static addressable objects, basically files and documents, linked using uniform resource locators (URLs).

Address bar

location barOmniboxQuickSearch
Most web browsers display the URL of a web page above the page in an address bar.
In a web browser, the address bar (also location bar or URL bar) is a GUI widget that shows the current URL.

World Wide Web

WebWWWthe web
Uniform Resource Locators were defined in in 1994 by Tim Berners-Lee, the inventor of the World Wide Web, and the URI working group of the Internet Engineering Task Force (IETF), as an outcome of collaboration started at the IETF Living Documents Birds of a feather session in 1992.
The World Wide Web (WWW), commonly known as the Web, is an information system where documents and other web resources are identified by Uniform Resource Locators (URLs, such as ), which may be interlinked by hypertext, and are accessible over the Internet.

Path (computing)

pathUNCpathname
The format combines the pre-existing system of domain names (created in 1985) with file path syntax, where slashes are used to separate directory and filenames.
Paths are used extensively in computer science to represent the directory/file relationships common in modern operating systems, and are essential in the construction of Uniform Resource Locators (URLs).

Domain name

domaindomain namesdomains
The format combines the pre-existing system of domain names (created in 1985) with file path syntax, where slashes are used to separate directory and filenames.
Host names appear as a component in Uniform Resource Locators (URLs) for Internet resources such as web sites (e.g., en.wikipedia.org).

File Transfer Protocol

FTPFTP serverFTP client
URLs occur most commonly to reference web pages (http), but are also used for file transfer (ftp), email (mailto), database access (JDBC), and many other applications.
When an FTP—rather than an HTTP—URL is supplied, the accessible contents on the remote server are presented in a manner that is similar to that used for other web content.

Web browser

browserweb browsersinternet browser
Most web browsers display the URL of a web page above the page in an address bar.
This process begins when the user inputs a Uniform Resource Locator (URL), such as, into the browser.

Uniform Resource Identifier

URIURI schemeURIs
A URL is a specific type of Uniform Resource Identifier (URI), although many people use the two terms interchangeably.
The most common form of URI is the Uniform Resource Locator (URL), frequently referred to informally as a web address.

Slash (punctuation)

slash/solidus
The format combines the pre-existing system of domain names (created in 1985) with file path syntax, where slashes are used to separate directory and filenames.
The slash is used in a similar fashion in internet URLs (e.g., ).

Hexadecimal

hex0x16
If not already encoded, it is converted to UTF-8, and any characters not part of the basic URL character set are escaped as hexadecimal using percent-encoding; for example, the Japanese URL //example.com/引き割り.html becomes //example.com/%E5%BC%95%E3%81%8D%E5%89%B2%E3%82%8A.html.

Percent-encoding

percent-encodedapplication/x-www-form-urlencodedPercent encoding
If not already encoded, it is converted to UTF-8, and any characters not part of the basic URL character set are escaped as hexadecimal using percent-encoding; for example, the Japanese URL //example.com/引き割り.html becomes //example.com/%E5%BC%95%E3%81%8D%E5%89%B2%E3%82%8A.html.
Although it is known as URL encoding, it is, in fact, used more generally within the main Uniform Resource Identifier (URI) set, which includes both Uniform Resource Locator (URL) and Uniform Resource Name (URN).

Fragment identifier

fragmenthash" portion of the URLlocation hash
The fragment identifier introduced by a hash mark is the optional last part of a URL for a document.

Clean URL

Semantic URLfriendly URLSearch engine friendly URLs
Clean URLs, also sometimes referred to as RESTful URLs, user-friendly URLs, or search engine-friendly URLs, are Uniform Resource Locators (URLs) intended to improve the usability and accessibility of a website or web service by being immediately and intuitively meaningful to non-expert users.

Typosquatting

catchall" typosquattinggoggle.comMisspelled
Typosquatting, also called URL hijacking, a sting site, 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.

Hypertext Transfer Protocol

HTTPHTTP requestGET
URLs occur most commonly to reference web pages (http), but are also used for file transfer (ftp), email (mailto), database access (JDBC), and many other applications.

HTTPS

HTTP Securesecure websiteS
URLs using the scheme require that requests and responses be made over a secure connection to the website.
HTTPS URLs begin with "https://" and use port 443 by default, whereas, HTTP URLs begin with "http://" and use port 80 by default.

WHATWG

Web Hypertext Application Technology Working GroupHTML5 working groupThe Web Hypertext Application Technology Working Group

Computer network

networkcomputer networkingnetworking
A Uniform Resource Locator (URL), colloquially termed a web address, is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it.

Mailto

mailto formsmailto URI schememailto:" scheme
URLs occur most commonly to reference web pages (http), but are also used for file transfer (ftp), email (mailto), database access (JDBC), and many other applications.

Java Database Connectivity

JDBCJava Data Base ConnectivityJava Database Connectivity (JDBC)
URLs occur most commonly to reference web pages (http), but are also used for file transfer (ftp), email (mailto), database access (JDBC), and many other applications.

Hostname

host namehosthostnames
A typical URL could have the form //www.example.com/index.html, which indicates a protocol, a hostname, and a file name.

Tim Berners-Lee

Sir Tim Berners-LeeTim Berners LeeTimothy Berners-Lee
Uniform Resource Locators were defined in in 1994 by Tim Berners-Lee, the inventor of the World Wide Web, and the URI working group of the Internet Engineering Task Force (IETF), as an outcome of collaboration started at the IETF Living Documents Birds of a feather session in 1992.

Internet Engineering Task Force

IETFInternet Engineering Task Force (IETF)IETF Working Group
Uniform Resource Locators were defined in in 1994 by Tim Berners-Lee, the inventor of the World Wide Web, and the URI working group of the Internet Engineering Task Force (IETF), as an outcome of collaboration started at the IETF Living Documents Birds of a feather session in 1992.

Birds of a feather (computing)

Birds of a FeatherBoF BoF
Uniform Resource Locators were defined in in 1994 by Tim Berners-Lee, the inventor of the World Wide Web, and the URI working group of the Internet Engineering Task Force (IETF), as an outcome of collaboration started at the IETF Living Documents Birds of a feather session in 1992.