What Are Headers in API Testing? Request & Response Headers in Postman | Part 9
In this video, we will understand Headers in API Testing using Postman.
Most beginners and even many QA engineers focus only on request body and response body, but headers play a very important role in real-time API testing.
In this tutorial, you will learn:
What are headers in API testing
Difference between request headers and response headers
Why request headers are fewer and response headers are more
Common headers like Content-Type, Authorization, Accept, Connection, Date, Content-Length
Why headers are not the same for all APIs
Which headers QA should validate and which can be ignored
How to view request and response headers in Postman
This video is designed for absolute beginners, manual testers, and QA engineers who want to understand APIs clearly and practically.
📌 Note: Headers belong to the API, not Postman. Postman is just a tool to send and view them.
🔔 In upcoming videos, we will cover authentication headers, advanced headers, and real-time QA scenarios.
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