Computer project software has become the need of the hour for transmitting essential data across different computers. Moreover, we can store this software on the hard drive of a computer or a USB drive. There are different computer project software like cURL, Postman, and more. And let us learn about this software in detail.

  1. What is cURL?
  2. What is Postman?
  3. Difference between cURL and Postman?
  4. Curl for API Testing
  5. Postman for API Testing
  6. Frequently-Asked Questions
  7. Conclusion

What is cURL?

cURL is a computer software project that provides a library as well as a command-line utility for transmitting data across several network protocols. The name is an abbreviation for “Client URL.”

cURL is a command-line utility for retrieving and delivering data, including files, through URL syntax. Because cURL is based on libcurl, it supports every protocol that libcurl supports.

When a secure protocol, such as HTTPS, is selected, cURL conducts SSL certificate checking by default. When cURL connects to a distant server over HTTPS, it obtains the remote server certificate, then checks the authenticity of the remote server against its CA certificate database to guarantee the remote server is who it claims to be.

Check out how to fill out forms using cURL and Web API.

What is a cURL Request?

The cUrl is one of the most popular computer software projects with a library and command-line utility that helps transmit data across several networks. It is also known as the client URL. It also helps to retrieve and deliver data that includes files, URL syntax, and more. Now, what is a curl request? It is a command line tool to receive or send files using the URL syntax.

Further, they support a similar range of standard internet protocols as libcURL. Moreover, cUrl is the most preferred standard line for automation since they are specifically designed to function without user interaction.

Advantages of cURL

Why do you, as a programmer, need cURL? The reasons are many:

  • HTTP is not necessary to use cURL because it is a fully supported protocol. Because of this, it is incredibly simple to use for both new and seasoned developers.
  • Because there are no configuration choices, working with it is also effortlessly simple.
  • The tool will take care of everything else after developers have entered their URL requests.
  • cURL is an excellent tool for new developers since you can quickly get used to it.
  • Because of its speed, simplicity, and strength, cURL is unquestionably the best tool for developers to utilize when sending HTTP requests.
  • Overall, cURL is an effective tool that may accelerate, simplify, and increase the dependability of HTTP queries.

Disadvantages of cURL

Even though the open-source tool can be extremely useful for any web developer, it has its shortcomings:

  • Some servers might not accept cURL queries.
  • The sorts of apps that may be utilized with it may be restricted, which might be pretty problematic.
  • Automated processes may be exceedingly challenging to employ on servers that do not even support cURL.

Although some URLs load without issue in a browser tab, they stall out when used with programs like curl. This is due to some URLs blocking automated processes completely.

What is Postman?

Postman is an API platform that allows you to create and use APIs. Postman streamlines collaboration and simplifies each phase of the API lifecycle, allowing you to design better APIs more quicker.

Postman describes itself as “the only full API development environment.” Postman is the only full API development environment, with roughly 5 million developers and over 100,000 businesses globally using it.

Postman is a platform for testing APIs. cURL is a command-line utility that allows you to transmit data over URLs. To do the same operations with REST APIs, we may use Postman as a GUI (graphical user interface) and cURL as a CLI (command-line interface).

Check out how to use Postman and Web API.

Advantages of Postman

  • The Postman API platform is a free service for anyone.
  • It can be used to create APIs for any purpose, including web apps, mobile apps, and desktop apps.
  • Because of its flexibility and ease of use, developers can easily create APIs according to their particular needs.
  • Apart from supporting any programming language and platform, the Postman API platform supports any data type. This means that developers can create APIs for any purpose and create a RESTful interface for their apps.

Disadvantages of Postman

  • We can become only familiar with Postman Monitor’s capabilities by using the free edition of the software.
  • Postman is overshadowed by its other well-known competitors, including cURL, Insomnia REST Client, Swagger UI, Paw, and Apigee,
  • While Postman is perfect for testing RESTful APIs, other APIs like SOAP APIs are not well-suited for it.
  • Agile procedures are made possible through APIs, although the API platform itself does not have many integration features. Integrating Postman with the current Agile systems and team collaboration is not easy.

Difference between cURL and Postman?

cURL is defined as a “Command Line Tool and Library for Transferring Data With URLs” by its creators. To transmit data, it is used in command lines or scripts. It is also found in automobiles, television sets, routers, printers, audio equipment, mobile phones, and tablets, and serves as the internet transfer backbone for thousands of software programs that influence billions of people every day.

Postman, on the other hand, is described as “the only comprehensive API development environment.” Postman is the only full API development environment, with roughly five million developers and over 100,000 businesses globally using it.

cURL belongs to the “File Transfer” category, whereas Postman belongs to the “API Tools” category.

Postman has a decent user interface that makes it simple to add/remove parameters, and modifying things is more versatile. Postman also allows users to save requests and other data, whereas cURL does not. In a nutshell, Postman enables a more contemporary, easier approach

Postman can assist in making cURL more user-friendly. We accomplish this in two ways.

  • A more user-friendly method for creating cURL commands Using the code snippet generator, you may create a request in Postman and convert it to cURL.
  • cURL instructions are executed in a more user-friendly manner. You may perform a cURL request by importing it into Postman.

Using the code snippet generator, you may create a request in Postman and convert it to cURL. cURL instructions are executed in a more user-friendly manner. You may perform a cURL request by importing it into Postman.

Curl for API Testing

Curl is a cross-platform command-line program that allows you to interface with numerous servers using URL syntax and a range of different protocols. cURL is capable of automating file transfers or a series of similar actions. It is, for example, a useful tool for modeling client activities with an API.

Let’s take a brief look at how to test REST APIs with curl. Curl is a data transmission command-line utility that supports roughly 22 protocols, including HTTP. This combination makes it an excellent specific tool for testing virtually any REST service.

Optional Command-line Parameters

Curl has more than 200 command-line parameters. A REST request can be executed without parameters or with one or more arguments to accompany the URL request in the command.

Postman for API Testing

With a beautiful user interface, Postman is meant to check requests from the client to the server and obtain a response from the back end. According to the tool’s creators, “Postman is a robust suite of API testing tools that has become a necessity for many developers.” We build fantastic tools to assist you in creating attractive APIs and increasing developer productivity.

Postman is used by over a million developers worldwide, and the number is continually rising. We want to create further solutions in order to give developers the most powerful solution for designing and testing APIs.” Postman comes with a graphical user interface for creating and verifying requests.

Frequently-Asked Questions

How to Use cURL in Postman

We can use curl in Postman by running a curl request. Further, we can use curl as the command line interface and Postman as a graphical interface to do the API programs. Moreover, we can also extract cUrl from Postman by selecting the </> icon. Then select cUrl from the drop-down menu and copy the code to use them.

cURL Request in Postman

Postman allows us to give a curl request and convert the Postman into cUrl. Thus, both cUrl and Postman can work together wonderfully, as the latter has a good UI that helps us remove or add different parameters easily. Moreover, Postman is highly flexible computer project software.

How to Get cURL from Postman

We can extract cUrl from Postman by following these steps:

  • Firstly, select the desired API requests in Postman.
  • Click on the respective code button.
  • Choose the curl from the menu.
  • Remove the backslashes and spaces and change the single quotes to double quotes.
  • Insert the required curl command into the terminal and note the results.

Postman: Export as cURL

Apart from extracting cUrl from the Postman, we can also export postman requests as cUrl commands. Here is the process:

  • Click on the “code” button. The Postman will pop up.
  • Change the HTTP to cUrl.
  • Share the code with the respective support members.
  • Save and share the final output.

Postman cURL Command

We can create a postman cUrl command by following these steps:

  • Create an HTTP request using Postman.
  • Then, click on the code button.
  • Generate a code snippet and select the cUrl from the menu.
  • Copy the command and use them.


cURL or “Client URL” is a command-line utility for transmitting data across several network protocols. Any web developer may benefit greatly from this open-source technology. You may develop and utilize APIs with Postman, an API platform. Anyone may use the Postman API platform for free. It may be used to build APIs for desktop, mobile, and online applications of any kind. RESTful API testing is ideal for Postman, but it is not a good fit for testing SOAP or other APIs. cURL enables you to communicate with servers using a variety of protocols and URL syntax. A more modern, simple, and user-friendly method of testing RESTful web services is made possible by Postman.