Uniform Resource Locator explained

Uniform Resource Locator (URL), still also known as Universal Resource Locator, is a technical, Web-related term used in two distinct meanings:
  • In popular usage and many technical documents, it is a synonym for Uniform Resource Identifier (URI);
  • Strictly, the idea of a uniform syntax for global identifiers of network-retrievable documents was the core idea of the World Wide Web. In the early times, these identifiers were variously called "document names", "Web addresses" and "Uniform Resource Locators". These names were misleading, however, because not all identifiers were locators, and even for those that were, this was not their defining characteristic. Nevertheless, by the time the RFC 1630 formally defined the term "URI" as a generic term best suited to the concept, the term "URL" had gained widespread popularity, which has continued to this day.

URI/URL syntax in brief

Every URI (and therefore, every URL) begins with the scheme name that defines its namespace, purpose, and the syntax of the remaining part of the URI. Most Web-enabled programs will try to dereference a URI according to the semantics of its scheme and a context-vbn. For example, a Web browser will usually dereference a https://example.org/ by performing an HTTP request to the host example.org, at the default HTTP port (see Port 80). Dereferencing the URI mailto:bob@example.com will usually start an e-mail composer with the e-mail address bob@example.com in the To field.

example.com is a domain name; an IP address or other network address might be used instead. In addition, URLs that specify https as a scheme (such as https://example2.com/) normally denote a secure web site.

Generally URL is case sensitive. Many servers try to resolve this but not always:

Example 1:
https://www.whtop.com and HTTPS://www.whtop.com both will open same page.

Example 2:
Link https://www.whtop.com/news is correct, but link HTTPS://www.whtop.com/NEWS will bring error page.

URLs as locators

In its current strict technical meaning, a URL is a URI that, "in addition to identifying a Resource (Web), provides a means of locating the resource by describing its primary access mechanism (e.g., its network 'location'). Tim Berners-Lee, Roy T. Fielding, Larry Masinter. (January 2005). "[Uniform Resource Identifier (URI): Generic Syntax]". Internet Society. RFC 3986; STD 66.

Internet hostnames

On the Internet, a hostname is a domain name assigned to a host computer. This is usually a combination of the host's local name with its parent domain's name. For example, "www.whtop.com" consists of a local hostname ("en") and the domain name "web-hosting-top.com". This kind of hostname is translated into an IP address via the local hosts file, or the Domain Name System (DNS) resolver. It is possible for a single host computer to have several hostnames; but generally the operating system of the host prefers to have one hostname that the host uses for itself.

Any domain name can also be a hostname, as long as the restrictions mentioned below are followed. So, for example, both "www.whtop.com" and "web-hosting-top.com" are hostnames because they both have IP addresses assigned to them. The domain name "none.web-hosting-top.com" is not a hostname since it does not have an IP address. All hostnames are domain names, but not all domain names are hostnames.

Address bar

URLs are typically entered into the address or location bar of a web browser. To the right is a standard Mozilla Firefox address entry. Address bars vary in appearance depending on the web browser displayed in.

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hostwinds.com Icon 🏆 Alexa 30,441 - 📅 - 11 Parts of a URL: A Complete Guide - A URL (Uniform Resource Locator) is made up of 11 unique parts that allow us to surf the web quickly and safely. Learn what they are and how they work?
🏆 Alexa 4,090,183 - 📅 - Apa Kepanjangan URL? Pengertian hingga Fungsi URL! - Kepanjangan URL adalah uniform resource locator, pengunjung harus menuliskan alamat URL lengkap untuk mengunjungi halaman website tertentu. The post Apa Kepanjangan URL? Pengertian hingga Fungsi URL! appeared first on Indocenter.
jogjahost.co.id Icon 🏆 Alexa 263,683 - 📅 - Apa itu URL? Memahami Fungsi & Struktur Penulisannya - Apa itu URL (Uniform Resource Locator)? URL adalah alamat lengkap dan spesifik yang mengarah ke suatu halaman web atau sumber daya unik lain (gambar, file PDF, file presentation, dll) di internet. Pada prinsipnya, fungsi URL yang utama yaitu untuk ...
platform.sh Icon 🏆 Alexa 124,953 - 📅 - Platform.sh Privacy Policy updates and subprocessors list change - We’ve updated our Privacy Policy to version 6.0, which now addresses UTMs and updated Law Enforcement Requests guidelines. We’ve also made a Trust Center subprocessor list change. Here are the specific updates: Added Urchin Tracking Modules (UTMs) ...
awardspace.com Icon 🏆 Alexa 60,614 - 📅 - What Is a URL and How Can I Get One for My Website? - URL which is an abbreviation for Uniform Resource Locator is used to navigate to any file, page, graphic, document or a program that’s accessible on the World Wide Web. The URL itself consist of a formatted string of text which points the software ...
keycdn.com Icon 🏆 Alexa 16,804 - 📅 - Canonicalization Explained - Canonicalization can be defined as, “A process for converting data that has more than one possible representation into one standard and approved format.” What that means is that every resource on a given website should have a single URL (Uniform ...
tfhost.ng Icon 🏆 Alexa 269,440 - 📅 - How Web Servers Works - How Web Servers Works Have you ever wondered about the mechanisms that delivered this page to you? Chances are you are sitting at a computer right now, viewing this page in a browser. So, when you clicked on the link for this page, or typed in its ...

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Aflexi Unveils Version 2.0 of New CDN Software - 📅 - New Aflexi CDN software version 2.0 adds new layers of customization and ease of use to the Aflexi CDN software platform. Aflexi, a developer and provider of content delivery solution for ISPs and content distributors, today released version 2.0 of New CDN Software. The company states that the new ...
Security Hole Discovered in Symantec Firewall - 📅 - A security hole has been discovered in the Web proxy component of Symantec's (www.symantec.com) Enterprise Firewall product, also known as "Simple Secure Webserver 1.1." The vulnerability concerns the way the Web server handles requests for URLs (uniform resource locators), addresses used to ...