What is the difference between URL and URI

The difference between URL and URI is: 1. URI is a sequence of strings used to identify resources on the Internet, while URI does not pay attention to the location of the resource, but only its identifier; 2. URL provides detailed information about the location of a resource on the Internet, while URI is a broader concept that covers not only URLs, but also other forms used to identify resources, such as URN; 3. URL is a type of URI A special type used to locate resources on the Internet, while a URI is a broader identifier used to uniquely identify and name a resource.

The operating environment of this tutorial: Windows 10 system, DELL G3 version.

On the Internet, URL (Uniform Resource Locator) and URI (Uniform Resource Identifier) are two frequently used terms. Although they are often confused or used interchangeably, they actually have different meanings and uses. This article will explore the differences between URLs and URIs and explain their role on the internet.

First, let’s start with the URI. A URI is a sequence of strings used to identify a resource on the Internet. It can be a web page, a file, an image or any other object on the Internet. A URI can locate a resource through a globally unique identifier, which is called a Uniform Resource Name (URN), or it can locate a resource through an identifier that describes the location of the resource, which is called a Uniform Resource Locator. (URL). The goal of a URI is to name and locate resources by a unique identifier, regardless of their location.

URL is a subset of URI, which is used to describe the location of resources on the Internet. A URL consists of multiple parts, including the protocol (such as HTTP or HTTPS), domain name or IP address, port, and resource path. By using this information, a URL can uniquely determine the location of a resource on the Internet. For example, "https://www.example.com/index.html" is a URL that points to a file named "index.html" located in the root directory under the domain name "www.example.com".

In contrast, URI does not focus on the location of the resource, but only on its identifier. Therefore, a URI can be a URN that provides only the name of the resource but no information about its location. For example, "urn:isbn:1234567890" is a URI that identifies a book's International Standard Book Number (ISBN).

In short, a URL is a URI that provides detailed information about the location of a resource on the Internet. Therefore, we can think of URL as a special type of URI, used to locate resources. URI is a broader concept that covers not only URLs, but also other forms used to identify resources, such as URNs.

URL and URI play a very important role on the Internet. They enable users to access and locate any resource through a simple string identifier. Whether you enter a URL in a browser to open a web page, or use a URI in an application to access an interface, URLs and URIs are the bridge connecting users and resources.

To summarize, URL is a special type of URI, used to locate resources on the Internet. URI is a broader identifier used to uniquely identify and name resources. Understanding the difference between URLs and URIs can help us make better use of them to develop more efficient and precise Internet applications .

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