How to Send JSON Data in Postman

We will delve into the topic of sending JSON data using Postman, a powerful tool for API testing and development. Whether you're a seasoned developer or a newbie, mastering this skill is essential for efficient API testing and development.

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How to Send JSON Data in Postman

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Postman is a powerful API testing tool that is commonly used for  API  debugging. During the process of interface development, JSON format is often used to transmit interface data.

JSON (JavaScript Object Notation) is a lightweight data-interchange format. Initially, developers tended to use XML for data transmission in project development. However, with the emergence of JSON, developers have shifted towards using JSON for data transmission.

So, how do you send JSON using Postman? The following section provides a detailed Postman POST request body JSON example.

Create a New Request by Selecting a Method

Set the Method: JSON content is typically transmitted through the request body. Common HTTP methods that support a request body include:

  • POST: Used to create a new resource, usually including the new resource data in the request body.
  • PUT: Used to update an existing resource, usually including the updated resource data in the request body.
  • PATCH: Used to perform a partial update on an existing resource, usually including the fields to be updated along with their new values in the request body.

Note: Although GET and DELETE methods also support sending a request body, it is uncommon to do so in practice.

A Step-by-step Guide to Send JSON Post Request with Postman

Before sending JSON requests, you must first download and install Postman, or use Postman online to carry out this process.

Step 1. Fill in the Request URL

Fill in the Request URL

Step 2. Setting Header

Add the following to the headers: "Content-Type: application/json". This setting specifies that the data being sent in the request body is in JSON format.

Setting Header

Step 3. Setting the Body

Set the Body type to "raw". Next to it, select JSON from the options. And enter the JSON data you want to send in the text box.

Setting the Body

Step 4. Sending the JSON Request

Click the "Send" button to send the request.

Sending the JSON Request

That's how you send JSON data using Postman.

Postman Alternative: Send JSON Request in Apidog

Looking for a Postman alternative? Try using Apidog instead. With Apidog, you don't need to manually add the required Content-Type key-value pairs in the Header. Instead, simply click to send the request in JSON format. This saves you time and makes the process much more efficient.

Open Apidog, you can go to the Apidog website and download or click the button below to access the web version, supporting multiple login methods.


Step 1. Create a New Request

Click the "+" tab to create a new request in Apidog as well as you can import the JSON request easily.

Step 2. Fill in the URL

Here, you can choose from various methods such as GET, POST, PUT, DELETE, etc. and then enter your URL.

Step 3. Set up the Body in JSON

To send JSON data, simply fill in the required information in the "Body" section of the interface as shown below.

Send JSON in Apidog

After following the above steps, simply click on the "Send" button to receive the response to your request.

Apidog, similar to Postman, provides a range of testing functionalities for APIs, such as:

  1. Automated Testing - Users can create automated tests in Apidog, which can be used to repeatedly test APIs. This feature allows you to check whether your APIs' endpoints are functioning correctly and efficiently.
  2. Continuous Integration (CI) - Apidog offers integration with CI/CD pipelines, letting users ensure that their APIs are thoroughly tested during every build. Users can integrate Apidog with CI tools such as Jenkins to automate API testing.
  3. Collections Runner - This feature allows users to run a set of tests in a collection repeatedly, eliminating the need to test APIs one by one. With the Collection Runner, you can efficiently test APIs without compromising quality.
  4. Scripting - Apidog allows users to write scripts to test APIs with ease, leading to customized testing and full control over the testing process.
  5. Assertions - Apidog provides an extensive set of assertion tools that let users analyze and test API responses. By defining test cases and specifying expected results, users can ensure that their APIs are functioning correctly.

Apidog is a great alternative to Postman, providing users with efficient and reliable API testing functionalities, resulting in improved quality and enhanced user experience.

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