What is a URL and Where is it located

What is a URL and how does it work?

URL is actually an acronym whose full forum is “Uniform Resource Locator”. You can think of this as a reference (or an address) that refers to a unique resource on the Internet. If you are new to the Internet, then you must have found this word URL very confusing. You might have heard about it many times here and there but you will not know much about it. Then in today’s article, you will get to know its complete information.

History of URL

Uniform Resource Locators were defined in RFC 1738 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 format combines the pre-existing system of domain names (created in 1985) with file path syntax, where slashes are used to separate directories and filenames. Conventions already existed where server names could be prefixed to complete file paths, preceded by a double slash (//)

Berners-Lee later expressed regret at the use of dots to separate the parts of the domain name within URIs, wishing he had used slashes throughout and also said that, given the colon following the first component of a URL, the two slashes before the domain name were unnecessary.

What is a full form of URL

The full form of URL is Uniform Resource Locator.

What is a URL?

A URL is a formatted text string used to locate a network resource in web browsers, email clients, or any other software. Network resources can be any files such as web pages, text documents, graphics, or programs.

Since the resources are represented by the URL and also the URL vertical, all these are handled by the webserver. In such a situation, it is up to the owner of that web server how to handle these resources and the URL associated with them.

Internationalized URL

Internet users are distributed throughout the world using a wide variety of languages and alphabets and expect to be able to create URLs in their own local alphabets.

An Internationalized Resource Identifier (IRI) is a form of URL that includes Unicode characters. All modern browsers support IRIs. The parts of the URL requiring special treatment for different alphabets are the domain name and path

The URL pathname can also be specified by the user in the local writing system. 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 http://example.com/引き割

り.html becomes http://example.com/%E5%BC%95%E3%81%8D%E5%89%B2%E3%82%8A.html. The target computer decodes the address and displays the page

How many parts does a URL have?

Any URL has three parts

  1. Protocol Designation
  2. Host Name or Address
  3. File or Resource Location

Special characters are used to separate all these substrings. Whose format is something like this?

URL Protocol Substrings

This type of protocol defines the network protocol so that a network resource can be easily accessed. These strings are often short names followed by three special characters “://” This is a typical name conversion that denotes the protocol definition.

URL Host Substrings

With the help of ost substring, any destination computer or network device can be identified. Hosts come only from the standard Internet database such as DNS and which we also know by the name of IP addresses. The hostname of many websites does not represent just a single computer, but it shows that it is a group of WebServers.

URL Location Substrings

Location Substring shows the path of a particular network that is present in that host. Resouces mainly reside in a host directory or folder.

How does URL work?

The URL has been designed in such a way that it is easy for people to remember it. But the computer needs information to identify the right website so that it can easily locate the right website.

Our browser uses its IP to browse a webpage. IP which we also know as Internet Protocol. This is a series of IP numbers that looks something like this

Just imagine how difficult it would have been if we had to remember all the websites by their IP address. And the wants of the internet are probably not as many as they are in this world today. Let me tell you this thing that not all websites have static URLs.

Some keep changing from time to time, due to which it is very difficult to reach them. That’s why we use URLs that are always the same and which are easy to remember.

When we type the URL of a website, then the browser then DNS which is also called as Domain Name Server, and with the help of this, it changes that URL to its corresponding IP. And with the help of which the browser reaches that website.

Types of URLs

By the way, there are many types of URLs and many different terms are used for them. I have told you about some types here.

1. Messy: These are those types of URLs in which there are many numbers and letters from which some organization sense comes. For example, ‘http://www.example.com/woeiruwoei909305820580’. Generally, these URLs are generated by the computer which creates thousands of web pages for the same domain name.

2. Dynamic: These URLs are also generated from the same place as the Messy URLs. These URLs are the end result of a database query that provides content output in the result of any query. These also look like Messy URLs in which characters like? &,%,+,=,$ appear. They are mainly used in the websites used by the consumer such as any shopping, traveling websites in which the users keep changing their queries frequently so that the answers also keep changing.

3. Static: These are the exact opposite of any dynamic URL. This URL is completely hard-wired with the webpage’s HTML coding. This URL never changes, no matter what the user is requesting.

4. Obfuscated: This is a very dangerous URL that is used in Phishing scams. As its name suggests, they are hidden. Which is used very cleverly so that it looks completely original. So when a user clicks it, he redirects them to a Malicious Website.

Why are characters not used in URLs?

We all must know that space is not used in the URL. But we should also know that according to RFC 1738, only alphanumeric characters and other characters like !,$,-,_,*,’,() are used in the string of URL. And if any other characters are used then it has to be encoded.

Absolute versus Relative URLs

Absolute URLs are called in which all the mentioned substrings are used. But in some cases only some or one location element is used, such URL is called Absolute URL.

Relative URL is called. Relative URLs are used in web servers and web pages as shortcuts to reduce the length of URL strings. such URL is called Relative URL

For example, the link of the same website is written in the format of Relative URL and Absolute URL.

Relative URL
<a href="/2016/September/word-of-the-day-04.html">

equivalent Absolute URL
<a href="http://thebestsiteever.com/2016/September/word-of-the-day-04.html">

The best thing that happens in this is that with the help of a web server, all the missing protocols and host information are automatically filled in. But keep in mind that relative URLs can be used only in those places where Host and Protocol Information can already be established.

What is URL Shortening

If we talk about Standard URL of any modern website, then we will know that these are very long strings. And how difficult it is to share strings of such long URLs.

Due to which many companies have made many such online translators, with the help of which a full URL can be shortened very much and can be used wherever they want. There are some popular URL shorteners like t.co (for Twitter) and link. in (for LinkedIn).

Along with this, there are many such URL Shortening Services such as bit.ly and Google, with the help of which people around the world are shortening their URLs for free. Along with this, many URL Shortening Services are also offering click statistics. Moreover, some even check the malicious URL in the suspicious Internet domain and inform the user.

What are Secure URLs

Secure URLs are websites that start with https:,// The URL of such a website is called Secure Url. This means that even if you enter your personal information on such a website, it gets encrypted before it is transmitted and it is not so easy for any hacker to read it. If you want to know in detail then what is SSL, then definitely read.

For the same reason, if a website asks you about your personal things like your banking details etc. then first of all do not forget to check whether it is a secure URL or not. And such a website should use some Security Protocol in its URL so that the consumer’s information is not misused. I advise you that before giving any personal information, take special care of all these things.

I think by now you must have understood very well how important a sitemap is, if you do not want to miss any page of your website, then you have to take care that those crawlers do not miss any page.

You can also add additional metadata such as Change Frequency and Priority. With this, you can also create a Sitemap for video and image. And once you have created a Sitemap, do not forget to validate it and notify Search Engines.


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